Hi Dan,
MOF Graphics has mind maps only in PNG. But, you can find some files in .EPS and .VSD
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=457ed61d-27b8-49d1-baca-b175e8f54c0c
Hope that helps
Regards,
Cleber Marques
MOF Brazil Project: Simplifying IT Service Management
www.mof.com.br | www.clebermarques.com | www.clebermarques.com.br