"...does increasing your dedicated vram..."
A video card comes with ram for video use. Usually it's GDDR3 or GDDR5. I can't think of a card that lets up upgrade the total ram.
Integrated video solutions let you assign some system ram (DDR3 usually) to video processing. Increasing the amount of your system ram dedicated to graphics won't damage your system, but also won't typically aid your graphic performance in any way (lots of vide ram helps at high anti-alias levels - most integrated video don't have the might to run at high anti-alias levels). -- BUT try it. If your system seems to run better then leave it. If not then set it back to what it was. It won't hurt either way.