some to get me a licence (don't care how you get it) ;-)
it has to work for unlimited domains, unlimited servers.
you have to have :
Plesk 7 for Windows Power Pack
A bundle of the SpamAssassin, Application Pack, Helpdesk, Tomcat, ColdFusion, and MSSQL Add-Ons.
again, the way you achieve this isn't my concern *if you get my drift*