One of the computers at work (President's) can't access certain sites. For example vettech.org. I can access it from other computers with no problem. I doubt that she has made changes to any settings, however, I obviously don't know that for sure. My question is where do I begin looking to find the problem. FYI she is not using any proxy server. Points are at max because this is important. I also turned off her anti-virus and that didn't help.