Okay, I've got a reply from Plumgas
on the GOG forum.
"win 7 usually is user/user name/app data/loca/virtual store/program files/gog /saves"
He added this, which I don't really understand, but..."under installer v2 program files /gog"
If this helps, Robert, go vote for Plumgas' post and mark it as the solution.
I hope it is what you're looking for.