I never thought removing an activex control could be so obfuscated.
Recently I ran Secunia PSI which checks the versions of programs to see if they are up-to-date and are a security risk. One program that showed up was Trend Micro’s Housecall activex control which was woefully out of date. Not using housecall anymore I though it simple to delete the activex control. Hah!
The control was firmly esconced in the Windows/Downloaded Program Files directory. Even starting Windows explorer as an admin did not help.
I opened Internet Explorer 8.0 > Tools > Manage add-ons.
The activex control was nowhere to be found until I selected All add-ons under the Show: label. I scrolled down to the Housecall activex control, right-clicked on it, and chose More Information. Then click Remove which will delete the control.