UML CASE tool marketing by SparxSystems http://www.sparxsystems.com.au
For a great book that explains what an EnterpriseArchitect does to create EnterpriseArchitecture see: http://www.amazon.com/exec/obidos/tg/detail/-/0131412752/
I've had a lot of problems with this... it *appears* robust but it isn't and their support forums seem terrible. Vicky Pyne (vicky.pyne@s-cool.co.uk)
My experience differs, I've found it robust, functional and an order of magnitude cheaper that the alternatives.