how to remove "worm"?

Giganews Newsgroups
Subject: how to remove "worm"?
Posted by:  ROB RET (ROB R…
Date: Fri, 9 Feb 2007

Using  Windows XP and Trend Micro Internet Security that came with a Dell
Desktop I get the following security message.  I can't seem to remove it.
Any suggestions as to how I eliminate this worm?

Trend Micro PC-cillin Internet Security Notification

Real-time Scan
Trend Micro PC-cillin Internet Security has detected a virus, spyware
application, or other Internet threat, and performed the action specified.

Infected file: C:\WINDOWS\WIN32UDT.EXE
Virus name: WORM_SDBOT.CZD
User name:
Scan action result: The Quarantine action was unsuccessful. Manually delete
the file if you are sure that it is not needed.
Note: If Search for and clean Trojans is enabled and is executed after
scanning, you can click Next to view final scan result information.