I'm afraid your motherboard is incompatable with your RAM.
Its DDR3 only, which is newer, but very expensive right now.
Your best off going for a DDR2 board, as DDR3 has no advantages right now.
Just select DDR2 as the memory while hunting for the max 1333mhz bus speed.
Hmm, it says DDR3 only, but under the list of supported RAM, states 2 and 3 as supported.
So yeah, it sounds okay to me. Sorry for the confusion.