hd4200

hey i have the following configuration 4 gb ddr2 800 mhz ram 2 gb ati hd4200 graphics card{it shows 2 gig in dxdiag but it says only 512 mb in everest ultimate[i am not sure which is correct]} Amd athlon x2 ql-01 1932 mhz direct x 11.0 windows 7 home premium 64 bit even then , i am...