Windows 2000 Professional defrag

Although any user can gain access to the Disk Defragmenter console, the ability to defragment a volume requires administrator privileges. If you do not have administrator privileges and you try to use Disk Defragmentor, you receive the following message:

Disk Defragmenter

You must have Administrator privileges to defrag a volume.

I want my Power Users (all of my users, for that matter) to be able to run the defrag utility themselves – without giving them administrator privilages. Hasanyone stumbled upon a way around this built-in restriction?