either use cleanmgr.exe from cmd.or try using it in safe mode.,

and you could use this article for command syntax of cleanmgr,

 

http://support.microsoft.com/?kbid=315246

JAKE72,

Does cleanmgr start at all when you attempt to run it? If not, do you receive any error message?

On the chance that the file is damaged, you can restore any damaged or missing Windows system files with System File Checker. Go to Start|Run, type sfc /scannow (space after "sfc") and click OK. You may be prompted to insert your Windows XP reinstallation CD.

Thanks.  I will try your suggestions. 

Thanks.  I will try your suggestion.  It will not run from Start.