Posted 13 October 2007 - 10:10 PM
I'm assuming two things here, correct me if I'm wrong, you're adding another hard drive to your system and you're currently running Windows XP.
If both of the above are true, go to Start > Run > enter in: diskmgmt.msc
This will show you the partitions in your system grouped by the hard drives they're on. They can be added, deleted, and formatted from there.