Chong Lee and Thomas Mathew -- Technology Specialists here at Microsoft -- are developing a report that you can load into Microsoft Operations Manager 2005 (MOM) to monitor the performance of physical computers that are candidates for virtualization. This report can help you determine which computers are good candidates for virtualization, and of those, which computers you can virtualize on the same hardware. This report will be available for download when it's complete. I'll let you know where you can get it. In the meantime, you can ask your TAM or account rep for a copy.
Click here to see a view of the report: http://megandavis.members.winisp.net/Resources/VS-Candidate-Report.JPG