|Turn off the BOLD!|
You can't upgrade the video "card" on the vast majority of laptops. If it can't do what you want it to do (I suspect gaming?), you'll have to buy a new laptop. Decent gaming laptops start at about $1000.
Does your laptop only have 256MB RAM? And is 64MB of it being used by the video leaving the system with only 192MB? That would explain why your system is running poorly. Upgrade the RAM to 1GB.