I have a WinXP system. A couple of weeks ago I started having problems with my web browser. I can go to a search site like Bing or Google and do a search and get the results back. But when I click on any of the links on the page, it doesn't go to the requested site, but instead goes to some sort of ad site. The site is different for different links. This happens with either IE7 or Firefox.

At the same time my TrendMicro virus protection/firewall started having problems - repeatedly running the same updates over and over. I'm not sure if these two are related or not, but I dont trust TrendMicro to detect a virus/trojan at this point.

So does anybody have any ideas what may be occurring? I've removed the machine from the network as a precaution - and my wife is hounding me to get it fixed.

If you need any more info just ask.