You mean to say that that the software for your health condition monitoring isn't available in 64 bit 7 or Vista? That being the case, then I suggest that you purchase another computer that will run the software. There are some PC's with 32 bit Windows 7 preinstalled that's not that expensive.
Look, I like to mess around with VM's, that's no secret on this forum. But that's all I do, is mess around with them, and have been doing so for a year & a half now. Knowing what I do know about them, I would never, I mean never, rely on a VM to monitor a serious health condition, period. And I would never suggest it to others, either.
It's not the same thing as a actual physical hard drive (the VM). It's merely a folder containing a virtual disc, on your physical HDD. It can be totally deleted from your computer with only 3 clicks. Sometimes, out of thin air, they don't always startup as planned. You can't pop in a XP disc & do a repair install on a VM on the run (when you need it to be there for you). You'll have to rely totally on a backup, which may take some time.
I just cannot, in good conscience, recommend this solution for a critical health care solution. Too much is at stake, and the risk is high for failure and/or critical mistakes. Virtual installs degrade at a much faster pace over a regularly installed OS.
Whatever computer that you were using prior to your build, if you still have it, use that one, if needed.
Cat