KB928366 .neet framework version 1.1 service pack 1 trys to update but won't and I have ser pack 2
If Windows Update continues to offer this to you, it likely is failing to install.
Since this forum is for discussion of Windows Live OneCare, I suggest that you go here for help options:
Windows Update Solution Center - http://support.microsoft.com/ph/6527
Or try the Windows Update newsgroup http://www.microsoft.com/windowsxp/expertzone/newsgroups/reader.mspx?dg=microsoft.public.windowsupdate&lang=en&cr=US
-steve