Microsoft .NET Framework 1.1 Service Pack 1 Fails

Archived from groups: microsoft.public.windowsxp.basics (More info?)

I have installed SP2 and am now trying to install the critical updates from
Windows Update. I am using Windows Update to install Microsoft .NET
Framework 1.1 Service Pack 1. Every time it is failing with error code 643.
I have now tried to manually download it and install it. I get an error
message that indicates "The feature you are trying to use is on a network
resource that is unavailable. Click OK to try again, or enter an alternate
path to a folder containing the installation package 'netfx.msi' in the box
below." The netfx.msi file is not on my system, therefore I cannot change
anything in the browse to help. If you continue from this point, you get
"Error 1706. No valid source could be found for product Microsoft .NET
Framework 1.1."

Help...