From the little I've found on your power supply it should have the SATA power connectors. Here is a picture of what they look like:
If you check, and there are no SATA power connectors on your psu, you can always buy one of these molex to SATA adapters:
You will need a SATA data cable, but the motherboard should have come with some. Here is what they look like:
You don't need to buy a retail edition optical drive, and your IDE hard drive is not a problem.