Outlook 2000
To delete old items automatically
Right-click the folder that contains the items you want to delete automatically, and then click Properties on the shortcut menu.
Click the AutoArchive tab.
To enable automatic archiving of this folder, select the Clean out items older than check box.
To specify when items should be deleted, enter a number in the months box.
To have items automatically deleted, click Permanently delete old items.
[from the Outlook 2000 help file]
HTH,
Apes