Cheers- i've been trying to tweak the basic forum install to make it a bit more "G4" :)I've also now changed the default permissions, so hopefully you should be able to edit and delete posts - damn default settings again!
I think the Avatar is what we are supposed to use, and the Member Level Picture is supposed to be assigned en-masse to a given level of user - i.e. Committee would all get a picture of a benevolent god looking down upon peons, regular members get a picture of a wattle and daub hut in some mud or whatever ;)
I've changed it though so we can all edit the pics as they are larger so nicer to look at