iDisk for Windows on USB flash drive?

Hello all. I am a physician/scientist in the not uncommon situation where the med school lab is mac-based but the hospitals are all-PC, with locked-down PC's on the wards. I have gotten around this to some degree by carrying around a little flash drive with "portable" versions of Firefox, Thunderbird, and OpenOffice. As I am going around the hospital seeing patients, I can go to any of the PCs, plug in the drive, and use my own software. I would like to be able to use iDisk this way, as an easy way to shuttle files around, but lacking administrator passwords, I cannot itstall it onto the flash drive. Can iDisk for windows be "portable-ized" to run this way?