pccheckup.dellfix.com

pccheckup.dellfix.com error message:
Dell PC Checkup will not work on your computer because the computer does not meet one or more of the following requirements:
Operating System: Microsoft Windows XP.
Browser: Microsoft Internet Explorer 6.0 and later.
Computer Manufacturer: DELL.
Language: English.
User Mode: Administrator.

I meet ALL these items.  The only thing that has changed from yesterday's successful run is that I downloaded AOL's new Computer Checkup 4.0.  Could this program interfere with  pccheckup.dellfix ?  Is there somthing I can do?