I just asked recruitment many of these same questions. Give them a ring or send them an email. They are a nice bunch and they can't be that busy at the moment really.
Here's what I learned
1. You are good for up to two years from the date of your interview. After that point some reassessment MAY be required.
2. Once they do start hiring first classes will be offered to those swimming the longest in the pool.
3. Nothing in 2009. Best guess 2010 "or beyond".
Seatrump