I E 6 Problem

Hello, I have a weird problem. I am istalling Windows XP Pro SP2 on a new HDD. The install was ok and I loaded several Programs. At some point I discovered that I couldn’t access certain ‘random’ websites. IE just hangs and I have to kill it with Task Manager. Another part of the problem occurrs when I go to the BBC website, for example, and try a search from a BBC page. The same thing happens. IE just hangs. I have looked at forums and one suggestion was that there was a virus or trojan,etc. I have run several programs(anti-spy, trojan, malicious software,etc.) I also installed IE 7 but that didn’t change anything. Does anyone have any suggestions. Thanks. Regards, Richard