Going through my Video setting on my computer, I notice I set the "system memory for PCI mode textures" to 100MB from the default of 47MB. My video card is 64MB. Does that memory pertain to the video card memory?

Thanks for any feedback
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Windows Xp
AMD Athlon XP 1700
Geforce4 MX440 64MB
384mb ram

I've never heard of that setting before. Where did you find it? Is it part of Nvidia drivers??

Yes it is part of the NVIDIA settings but setting the memory back to default didnt sove my problem. My system still freezed up and forces me to press the restart button.