You want a Socket 1156 board with integrated graphics. That pretty much limits to H55, H57 and Q57. You need a Core i3 530, 540 or Core i5 650, 660, 661, or 670 if you want the integrated graphics to work - the graphics chip is on the CPU. The Core i5 750 doesn't have an onboard graphics chip, so you can't have CPU integrated graphics, and need a specific Socket 1156 motherboard with an onboard motherboard-based graphics chipset. All Nehalem based processors, Core i3, Core i5 and Core i7 have an IMC which uses DDR3 memory only.
The ASUS P7F-C/4L motherboard has onboard graphics and two 8x PCI-e lanes, the board costs $199.99 - and it's out of your price range.
The ASUS P7F-X is the same, except it does not support as many CPUs, although it supports the i5 750, but costs $174.99, still out of your price range.
I'm just wondering, if you don't mind telling me, why you need two PCI-e 16x lanes if you're using integrated graphics?