And second, you can use a Vista DVD (or a Windows Server 2008 DVD or a Windows PE 2.x CD) and use DISKPART SHRINK to shrink disk volumes on earlier versions of Windows such as Windows Server 2003 ...

The Diskpart command in Vista now lets you shrink a volume by using the Shrink subcommand, see here for details. This can be useful if you have only one hard disk and a C: drive that fills the ...