I just heard about something on the news that I think might be useful, so I thought I’d pass it on. There is a conficker eye chart that can help you test if your computer is infected with conficker. There are several other sites that have the chart (which can easily found by doing a quick google (or other) search). There is even an explanation of how it works that points out that it’s important to scroll down to see how to interpret what you see (or don’t see as the case may be).
Conficker Eye Chart