1.MIF is a customized UML format for HL7 V3 Message and Document standards artifacts .if you get any version (2012JAN,2009SEP) fullsite package of HL7 V3 standards from this download page for example[1]:http://www.hl7.org/v3ballotarchive/v3ballot2012may/html/welcome/downloads.when you open this full site zip file ,you will find the mif files in the directory "V3BALLot\html\processable\MIF1-Lite" then you can find the file"POCD_MT000040UV.mif" for the CDA R2.
2.If you want the RMIM for CDA R2,you can goole the key word "CDA_R2_NormativeWebEdition2005" or get from this site:http://synoptic-report.googlecode.com/svn/tags/old%20trunk/doc/CDA_R2_NormativeWebEdition2005/,then you can browse the index page. or just search the file "L-POCD_RM000040.gif"
3.there is not any off the shelf tools to deal with the MIF.If you are in US,I strongly recommend the tools MDHT ,for else you can try Marc-HI framework(everest.marc-hi.ca).