1.5gb

I have 3 year old HP G6 2005AX. As i know it have 4GB RAM and 1.5GB Graphics but when i checked in Win 7 32bit, resource monitor it show Available: 780MB , Cached: 1052MB , Total: 2809MB , Install: 4096 It is mean Graphics uses memory from installed 4GB RAM? if so than what about 1.5GB RAM...

Suppose I have the Home500 plan with 1.5GB usage at day and I have exceeded the usage and extra charges are applicable. So, if I know change my plan to unlimited 750 before the end of month, do I still have to pay those extra charges for the usage beyond 1.5GB or only the new amount of the plan...

I have a BSNL night unlimited 2mbps plan. The free data usage is 1.5GB. I have been using it carefully so as not to cross the limit. However, this month the usage exceeded by around 700MB. Is there any software (freeware better) which can monitor data usage and alert/block the connection after a...