Check out this MIX post from the Canadian team summarising the various Microsoft programs and partnership options for web and design agencies.

Aussie agencies can contact me for more information about these programs.

Action Packs

In particular, a number of design agencies I've been working with lately have chosen to join the Microsoft Partner Program (MSPP - it's free). Membership gives them access to the Action Pack and Web Action Pack offers which provide heaps of software (Web Action Pack includes Expression Studio, for example) for very little cost.