I just installed Win XP Pro on brand new hard drive. There was another hard drive which contained My Documents folder. Windows installed on F: drive and the C: drive is now NOT the operating system but only contains data files. WTF? I thought the C: drive was always the operating system. Everything runs fine except the computer is upside down. Have to scroll down to the F: drive to see Documents and Settings, for example. Can someone help? Is there an easy way to change the drive letters, making the C: drive the operating system as it's supposed to be?