there was an America's patch for PES3/WE7 floating around www.proevolutionline.com it came with several S.A. teams, but it was on the Alpha phase (testing).....
So I bought WE yesterday. I have both WE and FIFA'05. The gameplay is better than FIFA. It's a lot more realistic. That's what makes WE worth it. FIFA has better graphics, license for all the teams, and horrible gameplay. The license problem is easy to fix since you can edit the names of the stadiums(La Bombonera is there!!!), teams, and players and also download patches and stuff. Online play is a big bummer since WE is more popular worldwide than FIFA. I won't stop playing FIFA because of the graphics and license, but I won't leave WE either because of the gameplay. I'll give my time to both.
oh, cause I know there are tons of WE leagues out there now that PC has online support. I ran into a World Cup yesterday.......still waiting for my copy for PC.