QUOTE(jrksuperman @ Jul 14 2006, 12:44 PM)

use a small laptop hard drive with the gp2x without a bob
Yes, power it with 4 AAA NiMH 1,000mAh (I use an enclosed battery box from Radio Shack with included switch) and terminate the Host side of the USB coming from the EXT on the bottom of the GP2X.
Use a Samsung e810 serial (NOT USB) reprogramming cable, I got mine from a webshop for $5, try eBay too.
If you use Alkalines the voltage will be over 6 volts. The NiMH are rechargeable and the voltage is lower.
My sig has a link to the gp2x wiki with the schamatic for the circuit. Only 2 resistors and 1 Capacitor per USB line (6 total).