Vista Install Error

Anyone have any workaround for getting VOX ATC installed on Vista? Both versions for FSX bomb during the install process. Never seen another application do this on Vista.System info:2.66 G Code Duo2G 800 MHZ RAM2 X Nvidia 8800 GTX in SLI mode (1.5 G video RAM)4 x high speed Raptors configured Raid disk arrayGoFlight Commuter Pilot ConsoleCirrus Yoke, pedalsOpenCockpits card & software (Engine start & management)ITRA TFTPRO Instrument Panel (On Second PC)4 X Benq 22" monitorsProject Magenta Instructor Staton (On Third PC)1G network between all three on 1G hub.Software is FSX DeluxePMDG Beechcraft 1900C add on (Customised for FSX)VistaOZ AI aircraftVistaOz Australian SceneryI might try an install on another PC with FSX on XP, then move it across to Vista. Can't think of anything else.Anyone any ideas, please?Trev Meacham