Vista - Windows Media Player 11 will not display

Hello. I cannot get my Media Player to open. I have tried to re-install but
the MS web site keeps telling me that my version is newer, and cannot be
replaced or repaired with an older version. I am thinking, "DUH!" So, now it
tells me that the file wmploc.dll has a version number of 11.0.6000.6336
where 11.0.6000.6324 was expected. It then says that Windows Media Player was
not installed correctly and needs to be reinstalled. Well, duh again because
I already tried that, but my Media Player is integrated into Vista and there
is no way it can be re-installed. I already tried to re-install the operating
system, but no luck. HELP!!! Dell's suggestion was to retore the system, but
the system is not even 4 months old. Why should have to restore it every
other week to get the media player to work? I have restored several times,
and that fixed it, but only temporarily. Now it won't open at all. Thanks in
advance for any response.