I have enough RAM and CPU power to run HL2 but my video card sux bigtime, its an s3 graphics card with 32mbs. I have a labtop, and I need to know if this can be upgraded. Its a compaq presario 700 if that helps, its atleast 3-5 years old. I know only certain models can be upgraded, and only to a certain degree due to the labtop's limited power. Would it be possible to upgrade this to an R600, and maybe upgrade the CPU as well?.