Stereo & Electronics - Doing Monsoon modding - need help finding resistors

I am doing this mod:

http://www.xse.com/leres/ss/leds.html

I bought the LEDs already, but now I need 1/4 watt, 680 ohm resistors to finish this up. I can't find them anywhere. Radioshack does not even sell them online. Can someone point me in the right direction please?

Thanks!

www.partsexpress.com has 1/2 watt 680 ohm resistors. They would be physically larger than 1/4 watt but would work fine.