If you need help with Microsoft © Hyper-V server 2008 R2, here are some people and places which will prove invaluable:
Homepage: http://technet.microsoft.com/en-us/windowsserver/bb310558.aspx
Manual and documentation: http://technet.microsoft.com/en-us/library/cc753637(v=ws.10).aspx
Mike Nail's video: Virtualization on Windows Servers. Very nice if you have a spare hour! http://technet.microsoft.com/en-us/video/hh780712
Installing Hyper-V on Windows Server 2008 R2 from Daniel Petri: http://www.petri.co.il/installing-hyper-v-on-windows-server-2008-r2.htm
Installing Linux Fedora Core 8 on Hyper-V: http://blogs.msdn.com/b/virtual_pc_guy/archive/2007/12/31/installing-fedora-core-8-on-hyper-v.aspx
Technet Virtual LABs: http://technet.microsoft.com/en-US/windowsserver/bb512925.aspx
Official forums: http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/threads
More official sites and forums:
Hyper-V FAQ: http://technet.microsoft.com/en-us/library/dd744892(v=ws.10).aspx
Hyper-V Virtual Machine Snapshots FAQ: http://technet.microsoft.com/en-us/library/dd560637(v=ws.10).aspx
Hyper-V Live Migration FAQ: http://technet.microsoft.com/en-us/library/ff715313(v=ws.10).aspx
Ben Armstrong, Hyper-V Program Manager is The Virtual PC Guy: http://blogs.msdn.com/b/virtual_pc_guy/
John Howard, Senior Program Manager in the Hyper-V team: http://blogs.technet.com/b/jhoward/
Tony Soper's blog: http://blogs.technet.com/b/tonyso/
Martin McClean's ThePosterGuy blog: http://blogs.technet.com/b/theposterguy/
Hyper-V Community Blog: http://hyper-v.nu/
Follow Ben Armstrong—AKA Virtual PC Guy—Senior Program Manager on the core virtualization team at Microsoft: https://twitter.com/VirtualPCGuy
Tony Soper, a Microsoft PM Windows Server at https://twitter.com/tony_soper