Unfortunately, I think you will have to wait for the new patch for WOE etc. and then copy your aircraft files. I'm not sure what change in WOI is causing the problems, but I tried adding the F-104, and it flew ok for about a minute. Then, all of the sudden my cockpit disapeared and the Starfighter was flying along with the nose 90^ from AOA. Weird.
There will be patches for the older games, right? Please?
There are a few WOI compatible addons popping up at:
http://www.combatace.com/
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System Vitals: AMD 939 4200 X2, 7900GS, 2GB DDR400, Win XP
Sims: GTR2, GTL, SFP1 thru WOI, F4:AF, EECH, IL2:1946, Arma