The media is spreading a lot of fear, uncertainty and doubt about Conficker. This is not a superworm, it will not destroy your datacenters and it won't create irreparable harm. That said, it is a resilient worm and you need to get a handle on it as you would with any other type of virus, worm or trojan infection.
Instead of wasting your time on various Web sites and downloading tools of questionable reputation, the first thing you should do is visit the Microsoft Web site and see it's official recommendations. You can find those here:
If you want a simple, clean network scanner to see which systems on your Class C network (if you're using something other than class C, you'll need an enterprise grade tool), you might want to check out the eEye network scanner for Conficker.
You can find that here:
And, remember in the future, make sure you automatically update your machines so that you don't have to worry about security issues that have been fixed almost 6 months ago 😉
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer