Windows live messenger problem

Oh geez I think I really done myself over.. I have done reasearch and everything can't find anything on the problem I am having. I must have uninstalled my last windows live messenger incorrectly or something. It wont delete from my ADD/REMOVE programs list.. says "Path could not be found, cannot unistall"....And when I try to install another windows live messenger it says older version of msn messenger could NOT be uninstalled
does this mean no more msn live messenger for me? Please help.
Jeff.
Jeff.