(I know I said I'd shut up, but I don't think this is such a sticky thing to slot my $0.02 into)
Well, I'm obviously not a serving member, and hell, I haven't even finished High School or SEEN a DFR office before, but as far as the Application Process goes,
I understand you have to apply first (Over the phone, or through
Home | Defence Jobs), after that, you'll be required to go to a YOU Session, where they'll talk you through a few a things/Interview you and you'll sit a basic Aptitude Test to assess your ability for the job you've applied for, and if successful there, they'll try and book you in for a Specialist Testing Date, and after that, you may/may not get a shot at Flight Screening, depending on how well you go. That's all I can recall off the top of my head, and I won't vouch for its accuracy. Hopefully someone who's been through the process (Believe me, there are plenty of people around here) can give you a more in-depth run down, but if you haven't already, reading this thread is an excellent start, since many people here have been in similar positions and made it, + There are some very informative posts you might find interesting.