There are many options for this.
I generally solve this using views with an exposed filter to search for things like user name or other profile fields. Often searching by a real name or an email is more valuable to me or my clients.
When you create the view you want to make it a view of users rather than nodes. Using this method you can create filters for anything having to do with your users and the way they use your site that is exposed to views.
You can also use Drupal search. You could modify the output files for your theme to add an edit button for the appropriate users when someone is found using search.
These are two easy methods. Hope they help.
Thanks, Steve
Steve Kessler Denver DataMan 303-587-4428 Sign up for the Denver DataMan Free eNewsletter
-----Original Message----- From: Stephen Wills [mailto:swills@beyond-print.com] Sent: Sunday, January 03, 2010 10:46 AM To: support@drupal.org Subject: [support] user lookup module
Is there a module that lets me type in the username or last name of a user in the admin so I can find someone without scrolling through hundreds of pages of users?
Thanks