This discussion is already pretty much over my head, but yes, I was asking about dual booting from a flash drive or card, but I'm getting the idea from this discussion that I don't quite follow that I'd likely be better off with a couple of small SD cards and SDHC cards and a USB reader and just put W7 on a 4 GB card, and Acronis and other stuff on other smaller cards to boot from and just swap em in as needed. Seems the simplest solution. So I guess my 8 GB card is kind of wasted as a windows boot device, unless like the first response suggested, I just put some additional folders with other apps that I might find useful when working on other peoples machines on there.
Anyway, thanks for the help. Much appreciated.