[Chris Sells] If you could boot Windows Vista from a USB drive large enough for the OS and apps, like this version of Linux, and log into FolderShare for your data, you could use any computer that allowing booting from USB into a temporary terminal (although device drivers would be a challenge).

Device drivers are the single best reason to use a VM machine on a keychain rather than a full OS installation on a USB drive. While I like the idea of hooking in FolderShare, why not just use WebDav to host it yourself?