Getting error Internet Explorer Operation Failed.
The best way is to Upgrade to IE 7 or 8 and do a system update.
The cause may also or instead be caused by a virus, so you may have to update your Anti Virus and run a scan. If you don't have a anti virus program download and update AVG Free and Malwarebytes Free version. (Virus and Malware are different so you will need both).
Once its updated run a FULL scan and remove any threats.