The Joys of Bureaucracy
There are advantages to working in a big organization - budgets tend to be looser, the projects tend to well established. On the other hand, getting started can be slow - the wheels of the IT organization turn slowly. I only got my work laptop today, for instance, and it took nearly 30 minutes on hold before the help desk got to my call (they were polite and helpful once I got there though).
It's going to be a bit weird having a machine that I'm not the master of - I don't have admin access to the Windows notebook they gave me. That's why I have my personal Mac though - it's my "real" machine :)