It seems more and more are upgrading from there builds of IIFP/MIIS/ILM and going to FIM 2010.  Here is a document that should assist in migrating to FIM 2010.

Migrating from MIIS or ILM to FIM 2010: http://social.technet.microsoft.com/wiki/contents/articles/migrating-from-miis-or-ilm-to-fim-2010.aspx#_Toc297155764