Isn't the Dell 5150 a laptop computer? If so, you are probably stuck with the video. I don't believe there is any option for adding a video card. If it does not do shading, etc., it will not run SH4. I have a nice wide-screen Toshiba with the same problem. They are not extensable. That is probably the issue here. You will have to get another computer that is capable of expansion. (Other than memory chips).
Old_tex