I have a compaq Presario CQ 50 series Laptop that came equipped with Geforce 8200M 256 MB graphics card. I'm a casual gamer, and but like to play racing games in my spare time. Is there I can upgrade my graphics card. The laptop also does not have any options in BIOS to share more memory. If the graphics card cannot be upgraded; is there any way I can allot more memory to it (I have 3 Gigs RAM) so I can get better framerate while playing the games?