World Supremacy Tank Mod

[MajorEET]

I started working on the jets earlier this morning, but got back into a game. I am using Win 7 and on my system at least, I just right click on an image and select edit and that takes me to an editor that allows changing image format, size, cropping etc.
Where I got stuck on the planes was choosing which ones to use! I was thinking level 1 would be the F-4 Phantom, level 2 the F-18, and level 3 the F-22. Any ideas?
How about infantry? Maybe Korea, Vietnam, then Gulf?
I don't know if I will get all that carried away with it. I just did the tanks because I am a treadhead at heart, and also wanted to see if I could do it. But if you have pictures you want to use, attach them here and I will modify the files to work in the game. It only takes a few minutes once you figure out what has to be changed.