Im building a gaming rig for my son. we have around 550-600 bucks for a system with case,psu,video card, memmory, cpu and hard drive.  He wants to run BC2 on it.  So take in mind the system recs for that game.  Come as close as you can to the budget.  Thanks in advance for the help.  Im not sure this is possible but you guys are pretty thrifty.