How do you allocate some of the ram to the video card?

i have an hp dv9000t laptop, 256 mb video card, 2 g ram, windows vista premium, and ( as guilty as i am) want to play complex-realistic graphic games such as Flight Simulator X and Test Drive Unlimited.|||Your V-RAM is already at optimum level. Try reducing screen resolution and/or lowering game quality settings. Also try 16bit color quality instead of 32bit.|||256 mb is more than enough as long as your card doesn't suck. More memory only helps on very high resolutions (like 1600 x 1200 and up). If the card sucks with 256 mb, it'll still be bad with more. And you can only allocate system memory to the card if you are using a desktop computer with the old agp technology.