efegea has ported a great screenshot utility for the GP2X, heres what he says:
Here is an utility I made that takes screenshots of GP2X's screen
It's an script that launches "fbgrab" executable and outputs a file named fbdump.png 10 seconds after running the utility.
I don't have my GP2X yet, so it's a pre-alpha-beta-gamma version Yes, it's not great but will be improved when I get my unit. No overwriting previous screenshots and instead of 10 seconds, a trigger, like "L+R+Select" to take the screenshot, are features to be expected. But I no promise anything
Download Here --> http://gp2x-emulation.dcemu.co.uk/fbgrab2x.shtml