Maybe. There is such a thing as Hybrid Crossfire, but the way I understand it works is that you need two discrete video cards of the same kind in addition to the IGP., in your case that would be two 4350's and a motherboard that supports it. Honestly it sounds pretty convoluted and it would probably be in your best interest to simply buy a new video card like a Radeon 5770 that would be several times faster than some ill-conceived 4350+4350+4200 arrangement anyway.