> So what are the options if you have 64bit windows and you want to run anything old > and 16bit-ish DosBOX or some kind of VM image of XP?
Thats about it. I keep a couple of XP VM's for just that. Trick is the junk they drop in the registry. The registry stuff is fairly easy to find. Better yet some sort of DRM driver (a pox on them).
You can also keep an old copy of xp around on an old computer and try to move it around. As sometimes the installers will install slightly different versions of themselves depending on your video card.