BleepingComputer.com: ACTIVEX Control Won't Install

I have recently recovered from the trojan Security Center XP (again, thank you for the detailed removal instructions). My Internet Explorer has been running well but now I have tried to Login to a new MLS Real Estate site and I get two error messages. One says page not working properly, terminate or debug. The next says the ActiveX IRCSharc.cab from "The Family Corporation" could not be installed. When I hit okay it completely freezes and won't even allow my Task Manager to get me out of it. I've tried unblocking the pop-ups before even logging in and once I'm in I can't even get to the bar to install. Funny enough, this file does not exist as a .cab file on my C: drive and whenever I have searched the web about the file it is always coming up in a log of someone infected! I briefly looked here but did not see it listed as a harmful file. I reinstalled IE 8 just in case some files were missing or corrupt but the same thing happened. I am running Kaspersky Internet Security. Thanks for your help.

Is there no way to manually install this ActiveX Control or is it a harmful file and I should use something else? I really need to use this site for business...