I'm trying to install ASA's OnTop 9.1 (version 7.0 ran great) on my Gateway 510SE, Pent 4/2.6 gig,80 gig harddrive, DirectX 9.0,Microsoft XP Home. I keep getting the following messege. "System\current control set\control\virtual device drivers. VDD. Virtual device driver format in registry is invalid." Followed shortly by. "Reality XP Garmin GNS 430 ver. 5.2.0. Can't start the reality XP Garmin. error:9547 code:00000000" I spent close to 2 hours on the phone with the tech support people at ASA yesterday with no luck. They suggested I try this forum. Any ideas? Thanks in advance!