need help

hi,

i have the media centre component (ehome.exe) in Windows Xp Media centre
edition 2005, there is problem which i am not being able to resolve, the my
videos, my tv and my music buttons have all disappeared on the start page,
only my pictures button is there and when i try to use the restore button in
the settings menu to restore all my buttons on the start page, nothing
happens, it just remains the same. it was working perfectly one moment, and
the next moment, all the buttons that i mentioned earler disappeared. Please
help

Wolfgang