Can I run Dragon Age - Origins?

My pc: Pentium Dual Core CPU E5200, speed 2.49GHz rated at 3.735GHz, 3.2GB Ram, Vista Home 32 Bit {service pack26002}, ATI 4830,DirectX10,ATIDriver for High Def - ATI AA01,DVD+-RW DH - 16A65 ATA Device and do you have to have Steam or another such to run the game or could I run it singleplayer no net.|||Yes you can