You can build a pretty nice rig for $400 bux...
I know you have probably been linked to all these but here we go again...
For a CPU you might want to look at fstfrddy's all metal blocks, they are what I use and I love them...Stinger WB
Commercial...D-tek Fuzion V2
.Or the 480 if you can find somewhere to put it.. GTX480
I'd use at least this size fan on any rad.86cfm Pana
...I use these mostly..115 Pana-S/W
.120x38mm fans have a higher pressure and seem to scavenge air through the rad better....
.Sinks....Swifty 60 Ram Sinks
Res..DD 5 1/4" Bay Reservoir
.Or just use a t-line...
Tubing...I like this on 1/2" barbs....Or this for the full size....
..Mixed at 10 or 11-1 with distilled water...2 drops of this for a biocide..PT Nuke
..I'll leave you my whole coolant recipe in my PDF, it has basic cleaning and set-up info in it also.....
Automotive worm drive clamps or just zip-ties...
Stuff you might like to read. go over all the stickies here also they have some good info...Take your time picking parts and look over all your options and you will be more able to set up a loop that is right for you....
..Water Cooling - In English
..Assembling your Custom Watercooling Setup
..Bleeding my WC setup..
..D-Tek Fuzion install tip! (Or why you should clean new blocks)
..How To: Clean out a D-Tek Fuzion CPU Block
..D-Tek FuZion Washer Made Easy.
..Poll: Push or pull configuration for Radiators
..Part 1- Temp's with and with-out shrouds
..How To: Make any Sized shroud in 2 minutes
..How To: Build A Performance Shroud
..PC Water Coolant Chemistry - Part I
..Cooling - An In-Depth Look