Personally, I just use MyComputer and navigate and copy and paste my files/folders from 2000 drive to the External drive
But the Backup tool in 2000 should work too
To reach Services in the Management console
Go to START>>Settings>>Control Panel>>Administrative tools>>Computer Management
>>Services and Applications>>Services
In the list, "Removeable Storage" should be set to Automatic
If it is, you may need to follow the steps outlined by Microsoft
http://support.microsoft.com/kb/235032I suggest trying first Steps 1 thru 5
Skip 6 and then do 7&8
Let me know if that helps