Shogun 2 freezing being a general pain

[PeteOZ]

I stopped playing Shogun 2 about 4 odd months ago (LOVED the game tho) due to it constantly freezing and just being a pain. The other day I got sucked into buying fall of the samurai. I got rather angry when I realised that the game just locks up and freezes.
After speaking with a friend from work, he told me it may be a virtual memory issue. So I increased my virtual memory, this has seemed to solve the freezing issue. But now Shogun just stops working according to windows. I did noticed in other threads you guys asked people to post the below document.
I really hope it helps im stratching my head as to why it does this. I just want to play some total war

[irishron]

"If it works, don't fix it" is what I heard growing up.

www.nvidia.com does have newer drivers available.

If you own the retail version of Win 7, you may consider the 64bit version to take full advantage of your 4gb of ram.