WIM2VHD has been around for quite a while now but I don’t know that many people realised what it could offer. Mikael Nystrom (Server deployment MVP) has blogged a reminder. You can use WIM2VHD to quickly create a VHD from a WIM file, e.g. the install.wim file in the Vista/Windows7/Server 2008/Server 2008 R2 installation media, and then attach that VHD to a Hyper-V virtual machine. This is a quicker way to build a set of lab machines than doing an installation, e.g. WDS, MDT, sneakernet, etc, if you don’t have a set of library images (VMM). I’ve been guilty of not doing this … reminder to self: use WIM2VHD in the future when I need to build a lab template. Mikael has the notes you’ll need to do the job in his blog post.