I used the longest IDE cable I could find at 36", at the time I installed the DVD drive below the head unit, it too was a pain in the you know what. The length barely made the connection. Just thinking of installing Vista with a USB powered DVD-ROM almost made me regurgitate. I was gonna scrap the project all together, seriously. I took the USB powered DVD-ROM back to BestBuy for a refund.
Did you just say SATA extension cables? Where did you find them at? I could sure use a couple to get the Blue-Ray in the back seats.