Also a couple of suggestions, it would be a good idea to add [OPEN] or [CLOSED] to the main post title so readers know quickly what they should be reading. Details such as basic setting and house rules will help people decide if a game is for them. Finally, there is no minimum number of players, if you get even a single bite, feel free to PM a forum admin and they will set everything up for you.
As far as what type of games you can run here, I'll quote from the forum intro post:
If you need help or have suggestions, you can post in Forum Help or Suggestions.I'd like to keep the discussion and play-by-post activity squarely in the old-school camp. If we're discussing D&D, that means anything from AD&D 2e or prior is fair game. Other genres are welcome from the same time period, as well as clones or games modelled after those editions.