As the title says, obviously due to things nobody can help such as the kind of BIOS your board uses, the chipset and any features that have been designed exclusive to that manufacturer, for example DFIs "CMOS reloaded". The guide still may not be 100% accurate, but its about as universal as it can get for everybody
Any letters in bold represent what certain items are refferred to for short.
Standard CMOS Features
Displays general system information such as HDDs and optical drives attached to the system as well as displaying current date and time.
Overclocking feautures
These are some overclocking features and what they do, as explained i've tried to keep this as universal as possible so if something specific is missing thats why.
Front Side Bus - This is the internal operating frequency of your CPU.
Multiplier - This is part of your CPU specification, multiplier factor will vary based on your FSB and stock operation frequency of your CPU.
Accelerated Graphics Port Frequency - Default is 66MHz, it is not needed to adjust this frequency although advanced users may wish to do so.
Divider Ratio - These are used to balance your CPU and RAM, the best ratio in all circumstances is 1\\1 (internal operating frequency of CPU and RAM operating at the same speed)
CPU Core Voltage - The higher this value is set the more heat your CPU will generate, the tradeoff to the extra heat is the ability to OC your CPU further, bear in mind there are times where increasing voltage will not help in OCing as the physical limit of that particular component has been reached.
Double Data Rate Voltage - The same princable applies as above.
North Bridge Voltage - Raising this will increase heat generated but the tradeoff is the ability to raise your FSB higher, as longs you have RAM that is capable of the speeds you are trying to get.
AGP Voltage - There is no need to adjust the default voltage of this although adjusting its voltage to 1.6v has been known to prevent "stutter".
Advanced BIOS Features
Quick Power On Self Test - Enabling this option will shorten the POST time of the system.
Boot Up Floppy Seek - When enabled the system looks for a floppy drive during POST.
Virus Warning - When enabled the BIOS monitors the HDD boot sector and partition table and will alert the user to any attempts to write to the boot sector or partition table.
Multi Processor Specification - This specifies what version MPS will be used, leave at v1.4 unless using an older OS for multi processing.
Numlock Status - Set to on the numeric keypad fuctions as number keys.
Advanced Chipset Features
Enhance Peripheral Component Interconnect Performance - When set to enabled this will improve PCI performance by reducing transmission times.
CPU Disconnect - When set to ebabled this will disconnect the S2K FSB on a C1 state.
memory timings
Row-active delay - This option specifies the active time between the number of cycles between an active command and a precharge command to the same bank.
RAS-to-CAS delay - This item can define the read\\write command period.
ROW-precharge delay - This controls the idle clocks after issuing a precharge command.
Column Address Strobe - This sets memory CAS latency.
AGP Aperture Size - Setting this to 64 or 128MB are the optimum settings.
special note to run Doom3 on ultra quality set aperature size to half your physical RAM.
AGP Transfer Rate - specifies the amount of data that can be sent across the AGP bus, 566MB (AGP 2x) 1GB (AGP 4x) and 2GB (AGP 8x) make sure your current graphics card supports the AGP rate you select. Raising the AGP frequency can boost the amount of data passed down the AGP bus, at the risk of graphical corruption if the frequency is raised too high.
System Basic Input Output System Cachable - setting this option to enabled allows faster system BIOS execution via the CPU L2 cach.
Video Random Acess Memory cachable - Set to enabled this option will give you faster video RAM execution speed via the L2 cach.
Intergrated System Peripherals
Init Display First - If using an AGP graphics card set this to AGP.
Universal Serial Bus Controller - If using USB devices leave this set to enabled.
Hope that helps a majority of you out lost in all the BIOS options
I may add a few extra things to the guide in the future if enough requests are made wanting it.

Any letters in bold represent what certain items are refferred to for short.
Standard CMOS Features
Displays general system information such as HDDs and optical drives attached to the system as well as displaying current date and time.
Overclocking feautures
These are some overclocking features and what they do, as explained i've tried to keep this as universal as possible so if something specific is missing thats why.
Front Side Bus - This is the internal operating frequency of your CPU.
Multiplier - This is part of your CPU specification, multiplier factor will vary based on your FSB and stock operation frequency of your CPU.
Accelerated Graphics Port Frequency - Default is 66MHz, it is not needed to adjust this frequency although advanced users may wish to do so.
Divider Ratio - These are used to balance your CPU and RAM, the best ratio in all circumstances is 1\\1 (internal operating frequency of CPU and RAM operating at the same speed)
CPU Core Voltage - The higher this value is set the more heat your CPU will generate, the tradeoff to the extra heat is the ability to OC your CPU further, bear in mind there are times where increasing voltage will not help in OCing as the physical limit of that particular component has been reached.
Double Data Rate Voltage - The same princable applies as above.
North Bridge Voltage - Raising this will increase heat generated but the tradeoff is the ability to raise your FSB higher, as longs you have RAM that is capable of the speeds you are trying to get.
AGP Voltage - There is no need to adjust the default voltage of this although adjusting its voltage to 1.6v has been known to prevent "stutter".
Advanced BIOS Features
Quick Power On Self Test - Enabling this option will shorten the POST time of the system.
Boot Up Floppy Seek - When enabled the system looks for a floppy drive during POST.
Virus Warning - When enabled the BIOS monitors the HDD boot sector and partition table and will alert the user to any attempts to write to the boot sector or partition table.
Multi Processor Specification - This specifies what version MPS will be used, leave at v1.4 unless using an older OS for multi processing.
Numlock Status - Set to on the numeric keypad fuctions as number keys.
Advanced Chipset Features
Enhance Peripheral Component Interconnect Performance - When set to enabled this will improve PCI performance by reducing transmission times.
CPU Disconnect - When set to ebabled this will disconnect the S2K FSB on a C1 state.
memory timings
Row-active delay - This option specifies the active time between the number of cycles between an active command and a precharge command to the same bank.
RAS-to-CAS delay - This item can define the read\\write command period.
ROW-precharge delay - This controls the idle clocks after issuing a precharge command.
Column Address Strobe - This sets memory CAS latency.
AGP Aperture Size - Setting this to 64 or 128MB are the optimum settings.
special note to run Doom3 on ultra quality set aperature size to half your physical RAM.
AGP Transfer Rate - specifies the amount of data that can be sent across the AGP bus, 566MB (AGP 2x) 1GB (AGP 4x) and 2GB (AGP 8x) make sure your current graphics card supports the AGP rate you select. Raising the AGP frequency can boost the amount of data passed down the AGP bus, at the risk of graphical corruption if the frequency is raised too high.
System Basic Input Output System Cachable - setting this option to enabled allows faster system BIOS execution via the CPU L2 cach.
Video Random Acess Memory cachable - Set to enabled this option will give you faster video RAM execution speed via the L2 cach.
Intergrated System Peripherals
Init Display First - If using an AGP graphics card set this to AGP.
Universal Serial Bus Controller - If using USB devices leave this set to enabled.
Hope that helps a majority of you out lost in all the BIOS options
