I have beta versions for both 32 and 64 bit Windows 7. It's only that I wanted to have a new version of VMMaker ready to release them together, updated to the new crt_range format of GroovyMAME. The problem is I'm stuck with a pile of work at the moment and I can't find time to update VMMaker as I'd like. If you guys promise not to complain about VMMaker being outdated I think I might release the beta version of CRT Emudriver for W7 as it is now, in a few days.
Besides, magic resolutions won't work on Windows 7, so please be aware of this in case you intend to run Hyperspin: it won't launch.