Thanks for the tips, especially that calculator! :P
Cougar4: The LED calculator I used from google said a 1/4 watt, 68ohm resistor. Since Radioshack doesn't carry 68ohm resistors, I just got seven 10 ohm resistors in series.
My project should be completed tomorrow, I ran into some complications today. Eventually, when the whole thing is completed, my cupholders will be illuminated through a plexiglass bottom with the regular plastic bottom underneath that. And between the plexiglass and the regular bottom, I'm putting some custom graphics. It should be pretty dope. Pics when I'm done
Thanks for the help guys