Thank you for your prompt response!
My BIOS boot sequence is not giving me an option to select the SATA DVD first. It just has Floppy, LS120, CD ROM, HDD etc. That's why I chose CDROM, CDROM and then Hard Drive. I am also trying to do a clean install, but can't even get to the Windows 7 Setup, as it won't boot up from the DVD Drives. I will try disconnecting the IDE drive to see what happens.