There isn't really a cheap way to do this. If you buy a new motherboard, you'll need new ram and CPU. There isn't any way around this. If you buy an 1156 socket board, you'll need to also buy DDR3 ram and a new CPU. Same if you buy an AM3 socket board as well. If the budget doesn't allow for this, you'll need to keep saving until you find a way to do it.