Try the YouP-Pax 2007 software release.
Its a 600MB ISO that Creative dont seem to mind being linked to in their Vista forum, so i guess it must be ok!
All you need do is de-tick "Install Drivers" as the current release is better tha the one released in the YouP-Pax pack.
I have ALL my software back, all the volume panels etc and the THX console is actually newer and nicer looking than the one I had under XP!
Nobody is quite sure what it is exactly, its definaely proper creative software though i can tell you that much.
Im reasonably happy now that I have SP/DIF passthough working for DVD's again (had to update PowerDVD it seems, it was only playing in stereo on dolby DVD's before)
Well im slowly getting there i spose!
Now i just need some decent SATA drivers and some nvidia drivers that allow me to overclock.. (very annoying one that)