This sounds great! Pokemon Mystery Dungeon is a concept I feel needs more attention with these kinds of fan game projects because playing together as your favorite pokemon and teaming up is just too good an idea to ignore!
http://www.fileden.com/files/2007/5/...yervillage.png
^Is this supposed to be a house area or something?
And yeah I think you should try vb.net for this game. This engine looks familiar. Is it one of those open-source free MMORPG makers?