It's better to use TrueCrypt from Link
this would create a file (container) and you could mount it as a standard disk, It's encrypted and password protected too :)
The program is free, and you could have it portable too.
I once run into something similar to this scenario, at that time I didn't have a mini (WinPE) which i have now, to be able to boot and copy my files and documents to a save place
What i did was a (not so quick & dirty way) was that I took the drive out of the PC, connect it to another PC as a...