HELP!!! Red boxes in IE, Firefox, & Opera where advertisments should be!?

I know this question has been asked several times before, but I have tried all that people have suggested and still have a problem. I have uninstalled and reinstalled IE 7, installed Firefox and Opera and I still have red boxes where advertisements should be. Can someone please tell me why I still keep receiving this error and if I'm doing something wrong. I am seriously beginning to think I have a virus on my computer, but don't want to draw that conclusion since everything else on my machine works fine.

Please help!!!

HELP!!! Red boxes in IE, Firefox, %26amp; Opera where advertisments should be!?windows xp

There are many possible causes and solutions.

Try the quick, easy fix first. Clear the IE cache from IE%26gt; Tools%26gt; Internet

Options%26gt; General%26gt; Delete files and Delete offline content. Reset the TIF

folder size to about 50MB (Settings button) and clear it occasionally.

Also, go to Start | Run and type

regsvr32 /i mshtml

and press OK.

Next...

283807 - Pictures Are Not Displayed on Web Sites in Internet Explorer

http://support.microsoft.com/?kbid=28380...

Note: Repairing IE instead of reinstalling may work

194177 - Description of the Internet Explorer Repair Tool (Windows

95,98,98SE,ME,NT4-SP1,SP2,2000-SP1,SP2...

http://support.microsoft.com/?kbid=19417...

318378 - How to Reinstall or Repair Internet Explorer and Outlook Express in

Windows XP:

http://support.microsoft.com/?kbid=31837...

221134 - Some Images, Contents, or Controls May Not Be Displayed When

http://support.microsoft.com/?kbid=22113...