Reinstalling System Restore
Click Start, Run and type %Windir%\INF
Locate the SR.INF file. The file may be shown as SR, if you have configured Windows Explorer to hide known file extensions. To see the file extensions for all file types, then try this:
On the Tools menu in My Computer, click Folder Options.
Click the View tab.
Clear the Hide extensions for known file types check box.
Right-click the SR.INF file, and then click Install
Windows will now attempt to reinstall System Restore, and may prompt you for the Windows installation source path. Point to %Windir%\ServicePackFiles folder, or insert your slipstreamed Windows XP (matching the Service Pack level of your system.)
System Restore core files will be reinstalled. Restart Windows when prompted.