Not sure if everyone has already seen this, if so, apologies.
http://europa.eu.int/ISPO/ida/jsps/index.jsp?fuseAction=showDocument&par...
It's basically a guide by the EU for government bodies migrating from propriatory to open source software. The main document is a 150 page behemoth of a PDF, but I have scanned through it and seems to make sensible reading.
They even provide a speadsheet to work out potential cost savings - and you can have in in OpenOffice.org format as well as Excel! True believers, clearly.
I am starting a new job at a local council in the New Year and it will be interesting to find out in any discussions have been made about using OSS in their offices. With several governmental bodies on the continent (the Germans are quite keen, aren't they?) making the switch, it would be interesting to know how things are progressing in this country - especially in the wake of all of our rising council tax bills....
Dave