[SOLVED] Custom Search: Drupal User ID as an attribute?

[aaronchow]

Dear All,
Just curious, I'm trying to perform a search on CiviCRM contacts that do not have a drupal account.  I went to create a custom search builder, but somehow I can't find the "User ID" in any of the drop-down box.  Is there a workaround where I can perform this search?  Thanks.

- Aaron

Update: Nevermind.  There is a "CMS User?" field available under the Advance Search screen.  thank you.