Some Windows XP machines have a broken Web Folders installation. Microsoft includes a Web Folders repair utility built in to Windows to correct the problem. Use the following steps to fix the problem:

1. Click on the "Start" menu in the lower left corner, and select "Run..."
2. Type in "webfldrs.msi" and click the "OK" button.
3. Click on the "Select reinstall mode" button.
4. Select *ALL* of the checkboxes *except* for the second one ("Reinstall only if file is missing").
5. Click on the "OK" button.
6. Click on the "Reinstall" button.
7. After the reinstallation is complete, reboot the computer.