Error: 1402

I have windows xp, I have recently had to reformat my computer because of incompatabilities with service pack 2.  When I try to install the Dell support alerts cd, I get an Error: 1402 Could not open key  HKEY_LOCAL_MACHINE\SOFTWARE\DELL\SUPPORT\2.0\MODULES, verify that you have sufficient access to that key, or contact your support personel.

I done some research on this and I find nothing, there are solutions for windows ME, 95/98, but none listed for windows xp.  Does anyone have any helpful suggestions on what could be causing this?

Any help would be appreciated.

Teresa