Changing graphic card question Not sure if this is a stupid question but I have a question about changing my graphic card. The thing here is that I have two desktop computers and I want to switch their cards. The first main computer I use now has better specs than the other one except the graphic card (nvidia8400). While the other one has worse specs but a better card... (nvidia 9500). So I am thinking to switch over the cards, the thing is that I don't know the procedures to do it... is it simply just switch the cards over and install the disc? or is there anything else I am missing?