|"the graphic card is intel829945G Famliy chipest"|
It's not a card at all. As grasshopper stated, "you have an onboard graphics chip on the motherboard".
What does that mean? Based on the chipset info you provided (incorrectly, I might add), your system is NOT a gaming machine. The Intel 82945G chipset contains GMA 950 graphics. Here's a review:
Other than that, you need to post your system specs or at least the make/model of your system. If you don't, you'll never have your questions answered.