Hai! I'm a electronic engineer in training. I think i can help! First you neet to tell me:
1.) How many LED's?
2.) What color and type of LED?
(EDIT: The color and type matter so we can find the forward voltage and current. Your average LED has a forward voltage of 2.5V and a forward current is 30mA. When you buy LEDs, it comes with documentation telling you the appropriate forward voltage and current.)
3.) Next we calculate the resistor values needed. (see links below)
4.) Finally we wire the whole thing up.
EDIT: Here is some websites to help you with the caculations and math.
<-- Here is a tool to help you calcuate things if you have a single LED
<-- Here is a tool for multiple LED's.
<--This gives you sample tables of the typical voltage and currents for LED's. It might answer any questions you might have about LED's or how they work.Edited by crimsontears809739 - 4/6/11 at 7:53am