Disk Cleanup Missing in System Tools

After reinstall of Win2k SP4 with all updates, Disk Cleanup is missing from System Tools. I can run cleanmgr.exe using the Run command or by right clicking a hard drive, selecting properties, clicking the general tab and click DiskCleanup, but it’s missing in the System Tools link. I’ve tried the solution in the last post at http://forums.techguy.org/windows-nt-2000-xp/600922-xp-home-disk-cleanup-exe.html, but the registry cleanup path is as it should be on my system. Does anybody know how to fix this problem?