problem with windows media player--please help

[kanz]

hey guys
i'm having a pretty irritating problem with windows media player--when i try to run wmp,nothing happens.so i tried to rollback to the old version,it said that rollback was completed and then again i tried to run wmp nothing happened.there is no process running in the background and then finally when i decided to reinstall wmp 11 back, it said "internal error".plz plz help.
thanks

[Cool Buddy]

What kind of a file is wmp?
I mean which format does it use? audio or video?
why don't you try VLC instead of WMP. its just a 10 MB download.