Boot Camp installer updates crashing WinXP

Question

Hello
I installed WinXP on my iMac today (2.6Ghz i5 processor, 16GB RAM, 2TB drive, OSX 10.6.8).
After running Windows (all the updates were installed), I tried to update the Boot Camp. My OSX disc installs Boot Camp 3.0 and I Software Updater is not updating it beyond that.
From Windows (Safari browser) I located and downloaded Boot Camp 3.1 and 3.2 from the Apple Downloads area.
However, when I run the 3.1 installer (which needs to be done before 3.2), I get a blue screen and this error msg:
"STOP. c000021a {Fatal System Error}
The windows subsystem process terminated unexpectedly with a status of 0xc0000005 (0x7c911629 0x00c5ebe0).
The system has been shut down."
I then have to do a hard restart to get back.
I did this several times and got the same result (am I Einstein or what?).
In short I cannot get Boot Camp software updated - and I know that I have to get to 3.2 which has the latest drivers for WinXP 32bit.
Any ideas on what I can try to fix this?
Also - WinXP only recognises 2GB of RAM - when I have 16GB installed ... how can I get Windows to use the full 16GB?
Any ideas?
Thanks

Answer 1

Perhaps some umwanted advice, to one who wants to save $$ be re-using ...
MS probably has disavowed the existence of XP, for all intents and purposes.
If I did load it on a desktop by itself, I would expect 3 days of downloading patches on even the fastest internet line.
Windows 7 has the best "production level" support MS has to offer currently.