I have been trying for two weeks to install the following updates:
810577 - Security Update
811630 - Critical Update (Windows XP)

They fail to install. It appears that they are downloaded, but will not install. I have tried about 10 times. It will just not work. All other updates install OK. Only these two fail.

Anyone have any suggestions?

Dell 8200
WIN XP Home
P4 1.8
512 Ram

Thanks