hi, thanks for your fast answer! i tried to do it as you told but it does not work correctly :S after the first 2 commands i got a message that the registration was successful. after the third command ("%ProgramFiles%\Windows Sidebar\sidebar.exe" /RegServer) i did not get any message, nothing happens. when i then start the sidebarm, the icons appears in the systray but the sidebar doesn't start (looks just like it crashes). any idea what went wrong? :S (and yes, i did a reboot ^^) thanks & greets, soomon