you should have a couple of those 3 pin connectors spread all over your motherboard (well, mostly in the CPU region). Any one of them will do, whether they are labeled chassis fan or CPU fan or whatever, as long as it fits it will work.
Another method would be to use a 4 pin adapter. Sometimes they are packaged with the fan, otherwise you can get them for cheap.
Hope this helps.
^ Thanks, but there dose not seem to be any other 3 pin connectors. On the MB there is one labeled "CPU fan" and one labeled "Cha fan" (only 2) but there are 3 fans all together. Also, it came with a couple 4 pin adapters but I see no where to connect them on the MB as well.