I have been using my RadarBox on a 20" iMac with VmWareFusion and a Vista virtual machine. I plugged a second monitor to the iMac so I can have the RadarBox application runing al the time while I use the iMac "normally".
The configuration works fine. The only issue I have is that if I have to restart the configuration, when I get to the AirNav Radar box screen where I need to log on, after I proovide the information, the log on screen just stays there. The only way I can get the programm to run normally is to reinstall it.
I found a "turn around" to this problem by using the "snapshot" feature of VmWare. If I restore the snapshot after a restart then AirNav runs immediately, no log on required.