In Vista, Control Panel > Administrative Tools Select Computer Management then Disk management, also similar for XP. Your drive should be listed there, you will have to format it by right clicking on it and selecting format. Make sure you have the right before doing so, you will loose all data on the drive! Select full format as it's a virgin drive, then go watch TV or something as it takes hours, literally.
The above was post before in the forum and this is a copy and paste of the thread.
Does it help you?