Just an FYI that I posted about an article on virtualizing server roles in OpsMgr 2007 over on our new OperationsMgr blog:

http://blogs.technet.com/operationsmgr/archive/2009/01/15/virtualizing-server-roles-in-operations-manager-2007.aspx

Enjoy!

J.C. Hornbeck | Manageability Knowledge Engineer