What is the difference between PCI-X and PCI slots? I understand that the PCI-X slots are faster than the PCI slots. Can you use a regular PCI card in a PCI-X slot? The reason I ask is because I was looking into buying an ATI Radeon 9200 PCI video card to put into a 1.8DP G5 (old version with the 8 memory slots/3 PCI-X). Will this card be compatible? If not, any suggestions for an AGP card to replace the crappy Nvidia GeForce? Thanks in advance. Also, any suggestions on the best 19 to 21 inch flatscreens under $1100?