While not a security article, I found this article timely as I was in the process last week of trying to migrate a number of Virtual PC 2007 machines to Hyper-V. In this article Tarek Majdalani give you the step by steps, complete with screenshots!
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer
Prowess Consulting www.prowessconsulting.com
PROWESS CONSULTING documentation | integration | virtualization
MVP - Forefront Edge Security (ISA/TMG/IAG)