Win XP SP2 & .NET Framework 1.1 SP's

I upgraded my laptop to SP2 w/o problems but have been unable to apply the
..NET Framework 1.1 SP's. The update simply hangs (non-responsive) everytime
I rerun this update .. it has downloaded the installation files. my laptop
is functioning

I do have Norton Internet Security and Spybot on both, my laptop & pc.
Strangely my PC which has much older H/W upgraded without a hitch.

Anyone knows whats up? Any leads will be helpfull

Am assuming this is preventing the VS.NET 2003 install too the Setup of
which is resulting in an error.

HELP!

Abhinav