Richard,
Fix the "DefragPath" value in this registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\DefragPath
Click Start, Run and type REGEDIT.
Navigate to the above location:
In the right-pane, double-click (default) and set it's data to:
%systemroot%\system32\dfrg.msc %c:
(if REG_EXPAND_SZ)
C:\Windows\system32\dfrg.msc %c:
(if REG_SZ)
Alternately, reinstalling Defrag using the INF file should fix the above
value automatically. The following was recently posted by Bert Kinney:
<quote>
The following file is located in a hidden folder.
To view hidden files follow these steps:
Open Control Panel - Folder Options - View tab, select "Show hidden
files and folders" and uncheck "Hide extensions for known file types",
click OK.
Open Windows Explorer and navigate to the windows\inf folder.
Find the dfrg.inf file, right click on it and select Install. You may
be asked for the XP CD.
</quote>
--
Ramesh, Microsoft MVP
Windows XP Shell/User
Windows XP Troubleshooting
http://www.winhelponline.com