If you have one of the newer MK2 F200 GP2X's and your having problems with the touchscreen not working in ScummVM then head over to the GP32x forums and have a read of the following link for some information and solutions to the issue.
Possible Touchscreen Fix For 4.0.2, 4.1.0 And 4.1.1 Firmwares
John
Own a new F200 GP2X with touchscreen problems in ScummVM?
Moderator: ScummVM Team