Gosh, you'd think you'd be safe on recipe sites! I was just looking at some recent viruses and one can be picked up on websites where a box pops up to say you need activeX, so to click on it, and when you do, you download the virus. I suppose you can't get it to come on at all? If you can, go here and run a scan...they pick up a lot of the trojan horses and such:
http://housecall.trendmicro.com/
I have my own antivirus program, but I still run this scan every now and then.