Hello, This is my first post. My PC currently has GeForce 6600 as my graphics card, however I feel it is time to upgrade it so I can play new games etc. I would like the best graphics card (regardless of price) that my PC can allow. I have Windows XP 32, Intel Pentium 4 540 3.20GHz 2GB RAM with ASUSTeK Computer inc motherboard. I realize I can't have the ultimate best Graphics card with my current PC set up, but what is the best my PC can allow?