I'm looking to upgrade to a new video card, but I know next to nothing about them. I currently have an ATI Radeon 7500 64MB card on a P4 2.4C, 512MB PC3200 RAM system. I'm looking for an inexpensive card (say in the $50-100 range). I don't need anything top of the line; just something that can play newer games at low to decent quality. Any help would be most appreciated.