Welcome to EN World, EpicBob! EDIT= Or at least the play-by-post parts of it?
I don't know that we have
exactly what you're looking for, but we do have a number of Pathfinder games if you're interrested, a good number of them part of the LPF living world. And these guys are always looking for new blood (you can find their forum section
HERE).
If you're in an OSR mood, MasqueradingVampire is starting a game
HERE and we're always looking for a new player or two in our Legacy of the Silver Dragon game
HERE (fair warning though, that last one is not 'action-oriented').
Doghead's
From the Outside game just got started (Dungeon World system), as did
The Fifth City (Pathfinder) and
Explorers of Calemor (4E). They might be willing to take on another player if you ask nicely.
Hope you find what you're looking for,
BF