So my PC keeps BSoD'ing... (poss iTunes/Video card related)

[J.K.R]

Its a 3.2 ghz AMD Athlon 64 X2 Dual core processor 6400 with 2gb of RAM running a cracked version of XP thats up to date, I use AVG if thats helps any.

I got it a few months ago and its been fine with everything i installed up until about a month ago, Where it randomly started blue screening saying that nv4_disp is causing it (it runs an NVIDIA graphics card) but if i restarted it it was fine. I then noticed it was itunes causing it, Whenever i plugged my ipod in, So i stopped using the ipod on this pc and it was ok for a while.

Now its bluescreening a lot (randomly) with no pattern, saying things like 'Page fault in non paged area' and lots of others, seems to change every time. Also when playing a video in firefox, if another page is loading it will freeze when playing. Itunes is a no no, It'll crash within 30 secs.

Any idea what i can do to sort it out?

Cheers
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