Photoshop CS3 Installation- Internet Explorer

Ive tried to download the Trial CS3, however, at the system check, I get the message:

"Installation cannot continue until the following applications are closed:

Internet Explorer

Please close the application(s) listed above and click "Try Again" to continue the Installation. Click cancel to end Setup."

I don't actually use IE, as I have FireFox. I've made sure to close every application that uses IE, such as msn etc, and I've gone into Task Manager to try and close it. However, if I close iexplore.exe in the Task Manager, another one comes up...

Any help?

Also, I read that you should rename iexplore to iexplore.ex_

Whenever I do this, another one merely comes up. And another. And another...

Sounds to me like you may have some malware attached to your computer. Do you regularly run and update anti-spyware software?

A virus is running that loads IE automatically, probably using your system to send some of the millions of spam that are going around the world each day. I would get it disinfected.