Cannot install Windows System Pack

Recently automatic updates installed service pack 3 and in the process managed to mess my PC up. When switching it on it would report driver errors etc and I couldn't use it. The only way to get it to work again was to remove service pack 3.

Now when I go onto it there seems to be no recent service pack on it, as most applications wont run (itunes etc). I am trying to install service pack 2, but to do this I need the latest IE8. I try to install IE8 and I get ANOTHER problem, it wont install, telling me the entirely uninformative;
The procedure entry point SHRegGetValueW could not belocated in the dynamic link.

I found a thread on this website discussing this problem http://forums.majorgeeks.com/showthread.php?t=119900.

A user reccomends downloading Dial-A-Fix, providing this link;
http://www.majorgeeks.com/download4899.html

I go to this link and there is no download option! There are the usual fake ad-links that disguise themselves as part of the program, but I cant find any official download (most other websites display would display the legitimate link by underlining it or putting a "download now" button next to it.)

So my questions are;
1- Where are the download links on this website?

2- How can I get service pack 2? What I am using at the moment is off the XP disc, so I can't put the disc in for it as it would have already installed it.

 

sorry maybe I should have elaborated. When I asked about how to get service pack 2 I wasn't simply asking for a link. I was asking for a way around the problem. As to get service pack 2 I need to install IE8....but I can't install IE8. So how can I cut out the IE8 and just get it via Firefox.

I just in case someone suggest it; I am not turning Automatic Updates on as it doesn't alert me as to when it will update, which will I mean cannot stop it installing Service Pack 3 which has twice stopped my PC from working.

I just need Service Pack 2, and a method of how to download it.