1. Write down what .NET Framework versions are already installed before you
go uninstalling/removing any of them!

How to determine which versions of the .NET Framework are installed and
whether service packs have been applied
http://support.microsoft.com/kb/318785

2. Now see Resolutions Methods 1 or 2 in
http://support.microsoft.com/kb/923100 (ignore the title).

If no joy, see this related post by my colleague MowGreen:
http://groups.google.com/group/micro...76de7769d04493
--
~Robear Dyer (PA Bear)
MS MVP-IE, Mail, Security, Windows Desktop Experience - since 2002
AumHa VSOP & Admin http://aumha.net
DTS-L http://dts-l.net/

mikey wrote:
> I am running XP SP2 and this update keeps appearing and when I attempt to
> download it, the process starts and terminates without incident. There was
> a
> fix on the web regarding the adminstrative tools area and drilling into
> Runtime Security Policy in Framework, I followed that and when I reached
> Code Groups the full permission was there but I had question marks on some
> of these boxes in that section.