Good luck with it, and you're going to have LOTS of "fun". Especially since Toady expects the next version to come out next month.well, heard of it long ago, found it a while back on tvtropes, found its wiki two days ago, got the basic game yesterday, picked up a modded version + texture pack today.
give it up for DWARF FORTRESS.
complex as heck, but awesome fun. (the normal fun, not game-ending "fun", though I fully expect that to come along)