Internet Explorer Security?

A website wants to open web content using this program on your computer-

This program will open outside of protected mode. Internet Explorer's protected mode helps protect your computer. If you do not trust this website, do not open the program.

Name: Windows host process (Rundll32)

Publisher: Microsoft Windows

I can't select ''Do not show me this message again'' because it is grey and I can't check the box. Then it says allow and don't allow. I press don't allow, now everytime i go on the internet I get this message. I would trust microsoft windows but who's rundll32? BTW I'm using Vista. Please help me out.

I have ran several full scans on several differnet Adware/Virus programs and have not found anything. It's driving me nuts

Internet Explorer Security?norton ghost

This is a bug in IE .Get Mozilla Firefox from http:\\www.mozilla.org\.This will solve your problem.

Internet Explorer Security?software

If this is windows xp just restore the system to a few days before the problem started and the problem will be gone. Its that simple.
repair your windows