Hi,
My firm is looking into implementing the Agile (the software title, not just the concept) for PLM support.  
I am looking for some information and advice from others who have implemented Agile in their organizations.  We'll be supporting mainly hardware developers but some software people as well.  a team of about 30 in all.
I'm interested to hear about your experiences with other PLM software as well.  Here are some of the questions I'm having trouble answering (and please feel free to tell me if you think these are the wrong questions to be asking):

How much does it cost for licensing and how is licensing handled?  (by individual users, by site, by server?)
What are the hardware requirements?
What were your costs for implementation support?
What are the software maintenance fees?
Do you link it to your ERP system?  if so, is that done with another piece of software or a plug-in or a custom application?
Do you have any valuable lessons learned?

Thank you so much for your help

-bhays