This is a problem that has been ongoing for some time.
See threads:
http://helpdesk.ebid.net/showthread.php?t=108839
http://helpdesk.ebid.net/showthread.php?t=112845
You responded to the first but the problem was dismissed.
The second should have resulted in a support ticket being raised today.
The problem appears to be with a combination of IE7 running under XP Home with Service Pack 3 installed. The result is that searching on eBid is non-existent. Any search returns zero results with the following error message placed halfway down the page:
Error : Read on for more information
Description : You'll need to add some more criteria to be able to search, use the form on the right to try again.
Doing that just returns the same error message.