Gary - I might be able to help. At the very least, I can share our experience at Piedmont with implementing Tableau. My email address is in my profile.
I encourage you to come to the ATUG meeting tomorrow (1/24/2013 from 1-4PM) at the Norfolk Southern offices in Midtown Atlanta (1200 Peachtree Street). We expect 2-3 dozen folks from various Tableau experience levels in attendance.
If you are able to attend, let's chat a bit before things start or during the break. I'd be happy to talk with you about your needs and see if our group may be able to lend our Tableau knowledge and expertise.