Hi Groundgripper,
Click on Start | Settings | Control Panel | Add/Remove Programs, then scroll down the list and highlight Internet Explorer 5.5 and Internet Tools by clicking once. A button will illuminate under the list saying Add/Remove program. Click on that and then click on the option to Repair, and click OK.
If you don't, for some reason, get that option, then go to Start | Programs | Accessories | System Tools | System Information | Tools | Internet Explorer Repair Tool and do it from there. That should sort it out for you.
Cheers
Liam