This might be a good place and time to bring up something that I've had to address twice just today.
If your anti-virus (AV) software flags something, it doesn't necessarily mean that you are "infected."
Mac AV software can pick up things other than Mac malware.
There are literally over a million Windows viruses. Sometimes they show up as an attachment to an e-mail message that you receive on your Mac. Windows malware can't run on your Mac, it can't harm your Mac, and in fact it is entirely harmless to you and your Mac. As long as you don't volitionally e-mail it to a Windows-using friend (and I don't see why you would do that), you can just ignore it. Or if you prefer you can just trash it.
There are lots of what is known as "phishing" e-mails these days. Most Mac AV software can pick those up too. "Phishing" e-mails aren't viruses. In fact, they aren't programs of any sort. They are spam e-mails that you have received that are trying to get you, via social engineering (i.e. lies and deceit), to either do something you shouldn't (usually send them personal information or money), or visit a Web site you shouldn't. Usually those e-mails are pretty easy to spot and just trash. Never click on a link in an e-mail from from an institution; always navigate manually to that institution's Web site, or call them. Never e-mail anyone back with personal information, no matter how legitimate an e-mail appears unless you are very sure that the e-mail is from them and that they need that information.
So, if your AV software flags something, don't get all excited, and don't go running around saying that you have a Mac "virus" until you look up on the Web what your software flagged. Chances are that what you found is nothing.