You can see what version of web browser you are using by clicking "Help" on the toolbar and then "About" from the menu. If you are using version 6 of Internet Explorer), you are entitled to a free upgrade from Microsoft, which I highly recommend.
Get Internet Explorer 7
If you can't see the toolbar I'm referring to, most likely you are using IE7 already. If the disappearance of the toolbar is not to your liking, you can make it reappear by...