Some times we write wrong alphabet in the run command of Windows XP. Next time we can not delete it from it the run. But now you can easily romove run command. At first write 'regedit' in the run command and press enter. Go this option now HKEY_USERS\Default\software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU. Look at the right side, there are a list of run commant. You select the wrong command and delete it.