The Methods & Tools newsletter has released in its archive section the
article "Creating an Agile Environment". Migrating to Agile is more
than changing your process. It also requires a change in culture. For
most companies changing culture is the most difficult part. I believe
this is true for several reasons. These issues should be addressed in
two ways. First, you want to address the culture needs of each group
head on. We will lay out a game plan for obtaining support from line
management, the team, the individual and executive management.

http://www.methodsandtools.com/archive/archive.php?id=70