Hi CurryStorm
As far as pro football simulators..
There's this one:
Barcode Games - Professional Football Simulator
I haven't tried it myself, but have read some positive comments about it. You can play with either real or fictional players and the league configuration is fully customizable.
Then, of course, there is this one:
Solecismic Software: Home of Front Office Football
It is by far the deepest pro football simulation on the market (that I'm aware of). You can play with real or fictional players, but the league configuration isn't really customizable at all...at least not as far as league structure...number of teams, number of divisions and all that. But it's an excellent game.
Hope this gives you a start.
Mark