Thanks for your replies.
I don't mind spending money to get the appropriate tools. I think I would rather do this myself, as the LBSs around here haven't been my favorite.
I am changing it because 2 bearings came out when I turned the frame upside down (because I heard a rattle) after removing everything but the BB.
What I am really interested in knowing is the size and threading for any new cartridge BB I might order to get this working.