I am new to airport add-ons and the downloading in FlyTampa looks like it may cause issues with me based what I read on their support link, especially since I am not the great in software troubleshooting. It does not look as simple downloading compared to Fsdt. I noticed in FlyTampa that they have 3 different files for Tampa-Maarten, how does one know which one to pick from to work on their computer? I do have Windows 7 with FSX. Their KSFO airport is FS2004. Does that work with FSX? Thanks for the link to "Flightbeam", I chose that for KSFO because the demo install was just like FSdt, very quick and easy. If FlyTampa works the same way, I will choose the Tampa-Maarten airport, if I can figure which one to chose and the downloading will not be an issue.