Windows Update preventing Internet Access

This morning I came to use my computer and found everything running as usual, apart from the fact a microsoft prompt came up telling me that in three minutes or so my computer would restart (due to having installed updates) unless I chose a following option allowing it to restart now, or restart later. I chose "restart later". I went away from my computer for about 20 minutes, only to return at the "welcome screen" and find myself logged off (obviously the computer had restarted). I re-entered my profile and found that I could not connect to the internet whatever programme I was using (browsers, games, or instant messengers).
I checked the connection on the computer I am using, which runs off the same internet connection, and found it to be fine with one difference: the updates had not been installed.
After about 3 hours I went back to my original computer after having become thoroughly annoyed and turning it off. I performed a system restore taking it back to yesterday, before the updates were installed and the internet then worked.

I unfortunatley let another family member use the computer, they installed the updates even though I had informed them what the updates did. I now find I cannot use the internet at all and find I have no restore point to return to.

I have the names of the updates installed (KB951748, KB890830 and KB951978) and have already tried manually finding them and uninstalling them with the following programmes: JV16 powertools, CrapCleaner and the normal "remove programmes" in the control panel. I was wondering if anyone knew how I can locate and uninstall these files as I have been unable to do so, so far, and find they are prohibiting my internet access.