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I'm thinking there's a possibility that your User
Account is corrupted. It may be worth a try to
create a new one:

(811151) How to Copy User Data to a New
User Profile
http://support.microsoft.com/?kbid=811151

Also...does this issue only occur in your My
Pictures folder? Do you receive an error
message?

I've seen a similar issue on Win2000 involving
Caere OmniPage Pro v9.0...do you have any of
their software installed on your computer?

Here's the Win2000 article if you would like
to read it:

(275470) Dr. Watson Error Message Occurs
When Renaming or Deleting a Folder Using
Explorer
http://support.microsoft.com/?kbid=275470