I'm not familiar with that sim but here are a couple of tips to try.

Have you read the FAQ's on [link=http://www.preflightsim.com/PFFAQ.HTM]Pre-Flights[/link] web site, you might find the answer there.

What operating system are you trying to install it on, Vista? If so, is it compatible with Vista? Are you running a 32 bit system or a 64 bit system?

I'm running Vista 64 bit system and I have been finding a lot of programs that won't work with a 64 bit system. [:@]

One more thing you might want to try, ask your question in the sim forum, someone in there might be able to help.

[link=http://www.rcuniverse.com/forum/forumid_138/tt.htm]http://www.rcuniverse.com/forum/forumid_138/tt.htm[/link]