VHD in Windows 7

Given changes to Windows backup formats in Vista/7/2008 the following tools may be rather useful as W7 and 2008 become ever more common:

http://www.jmedved.com/default.aspx?page=vhdattach
http://arainia.com/software/gizmo/overview.php?nID=4

this 2nd one can even allegedly be used [with care] with Vista native VHD backups. or
http://www.winmount.com/mount_vhd.html

which allegedly also allows one to write to the VHD as well.

Alternatively, if you need quick access to VHD backups, you can mount them directly from the 7/2008 Disk Manager, but the mount doesn't survive a reboot.

Also VHDTool - command-line tool which provides useful VHD manipulation functions including instant creation of large fixed-size VHDs.