I have an HP 8 GB system with a 512 mb graphic card.My problem is that I can not complete a project without my program constantly locking up and then havingto reboot my computer. I was thinking of upgrading to a 1 gb video card and hoping that would solve the problem..but pinnacle specs only require a video card half the size of the one I have. What do you think the problem is and what can I do ? Thanks