I need to replace a video card, but need help choosing the right one. My motherboard is a SOYO SY-KT600 Dragon Plus V1.0. I would like to use the AGP port on the board. The documentation says it will support NVIDIA GE-Force FX, 4 series, and 6 series cards, or an ATI Raydeon card. It also says it needs to be 1.5V. Any recommendations for a novice?