how can i go from 128mb to 896mb Video Card memory ?

Hi, can someone help me please, it says on the box of my laptop up to 896mb Ati Radeon Xpress 1250 Hypermemory but right now its set to 128mb how do i change it ? Where do i go to change the settings to try and up the memory for my video card ? I really dont know anything about laptops so please someone help me out.

Change the video card, aka replace it with a 896mb card. lol?

It looks like that is an integrated card, meaning that the Vram comes directly from ur ram, so if u have enough extra ram to supply the card (say 2-3gb at lest of actual ram) then you should be able to hit the 896 mark, i'd say try finding the setting to allocate more ram to the gfx card in ur bios, or if possible set it to auto (not sure if thats an option though)