Gave this app a run a fair while ago and it seemed OK but a bit slow.
Will probably give it another shot as they now have that magic word - "free".
Don't know if the free version has any limitations but there is one way to find out.
MojoPac is a technology that transforms your iPod or USB Hard Drive or Flash drive into a portable and private PC. Just install MojoPac on any USB 2.0 compliant storage device, upload your applications and files, modify your user settings and environment preferences, and take it with you everywhere.
Every time you plug your MojoPac-enabled device into any Windows XP PC , MojoPac automatically launches your environment on the host PC. Your communications, music, games, applications, and files are all local and accessible. And when you unplug the MojoPac device, no trace is left behind ? your information is not cached on the host PC.