I've done a few Rhodesian aircraft, real (Hunters, including the two modified by SAAF to carry Sidewinders) and what-ifs (Cessna O-1, Fiat Gina), and I'm also working on a campaign for a war in Britain. The scenario is a bit complex, bit it basically involves a bankrupt England pulling out of the Union and reneging on all payments to Scotland, Wales and Northern Ireland... And things degenerate from there...
The Hunters, Gina and Cessna are all up and available at CombatAce, while the Celtic Wars aircraft are still WIP. All I've done with the Celtic Wars aircraft is a bit of decalling - the base skins are not mine but Sundowner's.
Redriver6, isn't there a Vista patch at the Thirdwire Downloads Centre? I think you'll find there is.
Anyway, SF2 is backwardly compatible with the others, so if you want to get one, get SF2. Well, I think, anyway.