windows 2000 key board

my computer(using win2000) enter key is not working and ctrl key is working like enter key how i can reset keys to their default ,

Umm.. are you sure it's the OS? Have you spilled anything on the keyboard? Do they stick?

yes its os.no keys are stucked

This site might help. What was the last thing you did before you had this problem (I can honestly say I've never seen it before)?

Another site might be this one which says you can set keyboard layout with the command line command keyb