A Conficker Work Group is formed by the industry leaders to coordinate an effective response to the Conficker worm. http://www.confickerworkinggroup.org
Check if your IP is infected:
Information for enterprise
The Honeynet Project has an article about detecting Conficker infection with a link to a tool to scan you network for possible infection.
IDS Signatures, Detection tools:
List of domains used by Conficker.C for April 1st: