... there's been many "old" versions..
AFAIK this is the oldest one that is still available that has a public link:
Download VMware vCenter Standalone Converter 6.2.0
Not sure if that's the one you're after.
edit: Hmm.. looks like that is just the latest version too.
According to one of the people from VMware, even while it does not officially support older versions like Windows XP etc... that doesn't mean that it does not work. It _should_ still work for older OS's.
--
Wil
