I'm a first-time GM running a FATE-system EP game on Rizzoma. It's the new Wave system, and it works pretty well for online RP.
This is the recruitment wave, which details most of the info.
Play by Post, supplemented by a bi/weekly realtime session for 2 hours. I'm available M, T, or Thu EST evenings.
With FATE, this will be a collaborative style of RP, with less combat than hack-n-slash games.
I'm open to beginners, but you'll need to review the EP fluff and FATE system to be ready to play.
Check out the recruitment wave, it's fairly comprehensive.