Hi to all..Well I was installing Windows Vista Ultimate x64 Bit today and at the beginning of the installation I have found and error
"a required CD/DVD drive device driver is missing. If you have a driver floppy disk, cd dvd or usb flash drive please insert it now" 
..So what should I do now..Cuz I have no clue about it..Some one has also referred me to install JMICRON driver for Vista 
..But seriously I dont know much about it as am not a pro in hardware..But if someone could help me step by step I will do that hardware thingy for sure as well..
MY HARDWARE:
Intel Core 2 Quad Q6600
Intel DG33FB
4x1GB Kingston Rams
Sony DRU840A DVD Writer
XFX Geforce 8500GT 1G