I'm going out to best buy today to get a video card for my PC. I bought RCT3 for my brother for christmas, and just figured out we don't have enough Video RAM. I'm thinking I'm going to get a 64 MB card. The minimum requirement is 32 MB, reccomended is 64 MB. Are there different kinds of video cards for different types of PC's? We have a Dell Dimension 4100. Thanks for any help!