I moved this to the legacy forum. The last version of Logic that runs on windows is Logic 5.5.1. All versions released since then, up to the current 8.0.2, are Mac only. Logic 5.5.1 was released in 2003, years before vista. I have no idea as to how well it runs on vista, if at all. it runs well in XP, albeit has problems addressing more than 1.3 GB of RAM.
kind regards
Mark