Hi, my iPhone is on firmware 2.2.1. There is a dead strip on my phone. Now, i had a passcode too. And then I changed the touch sensitivity through Touch.plist way too much. Now, I cant type in my passcode. My iPhone is stuck at "iPhone is Disabled, connect to iTunes"

If I can just change the plist and restore the sensitivity to the previous setting, I will be able to avoid restoring. Moreover, I am away from home for a few months, so there is no scope of restoring from the backup which is on my home PC. If I have to DFU, I will lose all my data. Can someone please help me!! Is there any way to change the plist on the phone through a pc?