|you might try cleaning out the IE cache in internet options under general tab!|
If you have some spyware or trojans in your computer they may be detectect by the website security and may not allow you to view the site. Also if you are trying to spoof or hide behind a proxy server you maynot be able to access certain sites.
Check your security settings in internet options and see if they have been changed. They should be set to default(greyed out if set to default) for all the settings.
The other option is to make sure that your antispyware programs have not over secured the internet....turn them off and see if you can go online. turn off the firewall.
If you are behind a router....you might need to reboot the router
In The Matters Of Style,
swim with the current;
in matters of principle,
Stand Like A Rock
"People demand freedom of speech to make up for the
freedom of thought which they avoid."