When I made the computer I chose the ATI MOBILITY™ RADEON® X300 64MB HyperMemory as opposed to the 128MB DDR ATI's MOBILITY™ RADEON X300 PCI Express x16 Graphics Card thinking I was buying in fact a dedicated video card that I would later be able to upgrade? Is this card definitly dedicated? or is it embedded? If its embedded can I later take it out and upgrade? And does embedded mean integrated on the mother board???? Please Help!!!