[Videx]

Basically you just want to create a new user group and give it the perms you want. But I don't know how easy that's going to be, depending on the powers you want to give them. i.e., some permissions are spread around - many are in the usergroup, but some are down in Forums also. It's probably not as complicated as it looks, but I'd try it with one or two test accounts before I go handing it out to hundreds.