You are running MS Internet Explorer 6.0. Microsoft recommends users to upgrade to a newer version.
This can be accomplished via Windows Update link located in your Start Menu or on
Microsofts web site.
IE 6.0 is susceptible of multiple vulnerabilities.
You really should consider running Windows Update regularly as there may be many other security holes on your computer.
In fact while your at it give Firefox a try, it is a much better/safer browser! Firefox
