I want to share system RAM with VRAM, How Do I Do It?

Hello everyone, and thanks for looking.

Ive recently bought Splinter Cell for my laptop, and in 1024 by 800 mode its a bit slow when playing, when i play it in 640 by 480 its a lot faster but the quality is rubbish. I think its because i have 64MB VRAM, The graphics is integrated and i have 512MB RAM altogether. (Which i can upgrade anyway)

When i press the windows key in the game and go to the desktop i still have loads of free RAM left which isnt being used. So i think that its using all the 64MB VRAM and is struggling. Where i could easily do without some sytem RAM.

Here's my laptops spec:
AMD Sempron 2600+ @ 1.6GHz (64bit)
512MB RAM (PC2700)
VIA S3G Unichrome IGP (64MB from the 512MB) (System actually 448MB)

Is there anything i can do to improve the performance of the game?
Run software which gives it extra RAM from system?
Change my graphics settings to 16bit?
What can i do?

Thanks, Antony...
 
If your video card can support more that 64mb, then it should say that in the BIOS. But if 64MB is that max that it can support, then im afraid you cant add any more to it.
 
I dont know what to do???

In bios it doesnt say anything about the graphics card, it just says that 64mb is allocated to it and thats it. I cant see or change anything in bios except for boot order.
What do i do?
 
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