Don't blame Realflight for issues with MS VISTA - the real suckie ! Go back to XP. I've been using Realflight for years no real problems. The only issue I can recall is that when my system died I could not reinstall Realflight without calling them. It may not be the best sim out there but it was at the time I bought it. It's a real shame they don't let you UPGRADE to the next version. YOU MUST BUY THE NEXT VERSION ! ! ! ! Now that SUCKS !!!!