Ok, I have a laptop that has a pretty good graphics card, Nvidia 8400, but the video memory is kinda low. The installed video memory is 128mb, but the available memory is 895. Is there a way to upgrade the video memory, without having to buy a new graphics card? I like the Nvidia 8400, but not the amount of installed video memory. To be specific, I want my laptop to have 256mb of video memory instead of 128mb. Thanks