Yes, you are being rude. This isn't IRC, have some patience. The amount of RAM you have or what kind of a video card you have do not play such a big role, at least not as big as your CPU. That is, you don't have to have huge amounts of RAM or the latest and greatest graphics card to be able to use emulators just fine. Emulation of any system is heavily dependent on CPU speed. The graphics card simply provides and output for the graphics and does little else. RAM usually just needed to store the required amount of texture data. Having said all this however, your graphics card is the culprit is you have weird lines, as it's teetering on the line of what's considered below minimum requirements and nearly worthless for emulating complex 3D hardware. Why? The GeForce4 MX 4000 is basically a GeForce2 with a slightly enhanced feature set, and a GeForce2 is definitely below any perceived minimum requirements for Dreamcast emulation. The only thing you can do is to update your graphics card drivers and hope for the best, I wouldn't be holding my breath if I were you, though.