have you gone to administrative tools>computer management>disk mangement and see if the drive shows up as a black unformatted drive? if so, right click on the drive and create patirtion. it will take you thru a short wizard where you'll be able to choose what type of formatting, drive letter, etc. also beforehand make syre the drive is recognized in the bios and that you have the port its plugged into enabled, in the case of sata drives or that the proper jumpers in the right place if you're using ide drives.
9 times out of 10, if it aint configured in the bios, windows wont see it.