Legit files?

From: Ken (anonymous_at_discussions.microsoft.com)
Date: 03/31/04 

Date: Wed, 31 Mar 2004 05:19:41 -0800

After a bout of viruses, I have three files in my System32
folder that seem suspicious -- qscsdq.exe, cccds.exe and
ffqca.exe. How can I determine if these are legitimate
files, and if not can I simply delete them?

Thanks!