Whomever may be able to help me, i'd really appreciate it!

I've set up my new rig, put in the BOOT-132 GA-G31M-ES2L disc which I burned with Power ISO - and all I get is a 'Disk Boot Failure' message. I've tried to burn the disc several times to no avail, even tried to burn iBoot too, but I get the same message!

I also tried ripping the 132 ISO onto a USB thumb drive, which seems to work apart from the fact I can only select my Hard Drive to boot from (when I need to boot the Retail Snow Leopard disc from the DVD drive!)

I HAVE NOT done anything else - the hardware is all brand new, and nothing has been installed onto the HDD.

My set up is:
Samsung 1TB HDD
Intel Duo Core 3.06ghz
GA-G31M-ES2L (V2)
4GB OCZ Gold Ram

Thanks in advance!