VoiceMachine on Win7 x64 can't install

just found an ages old CD with VoiceMachine, thought I’d try it again.

But I am unable to run the installer, in any compatibility option, XPsp2, XPsp3, what not, as admin… nothing works… It always sais “wrong windows” version…

Are there any tricks? Or should I trash VoiceMachine, finally…?