David. I'm assuming you have WinXP. Airport 2.10 is the original DOS based version of the program which might not be compatible. To save confusion try the latest Airport 2.95 from the home site.
http://www.airportforwindows.com/The developers also support it from there.
If you still have no luck I can recommend FSSC which is a similar application.
http://fssc.avsim.net/I have no knowledge of VOD or if it's still supported. May I suggest you try EOD.
http://www.echos.ch/eod/Oops sorry, I also know nothing of Nova except that it appears to be payware. This is the home page.
http://www.fsnova.com/