AFAIK Ram is a physical thing. That means you can't increase the amount of it by just altering some settings. Just as you can't change a four cylinder car engine to a V8 by tuning a microchip.
What comes into mind about what you remember having heard, is that most computers with built-in video chips have the option to increase the portion of computer ram used for graphics. True, that will increase the amount of "video ram", but normal ram is much slower than that of video cards. If you have huge amounts of ram in your laptop (like 8 gigs or so) dedicating one or even two for video usage wouldn't cripple the rest of your computer, but it won't turn your regular household machine into a turbo-boosted gaming monster, either. If you find the setting, try to find a balanced setting to get the most out of it, but don't expect wonders to happen.
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Skuzzy, you were faster because you didn't have to do the spell check [/edit]