Almost made it!...please help
 

Im order to maintain a slight relationship with anonimity, I will keep this as ambiguous as possible.

I desperately want to fly for a career but it is becoming apparent that there is no more room at the inn!
I joined the RAF 3 years ago, went all the way through pilot training to the end of a helicopter OCU and was chopped for low-level capacity. Now that the multi-engine stream has all but closed due to huge numbers of frontline pilots staying in after 11/9, my question(s) is this...

What are the current types of licences available under JAA rules?
What experience are airlines generally looking for?
How much would said licences cost on a modular course of training?
And most importantly: What can I hope to achieve with my level of experience?..... approx 500 hrs (220 FW, 280RW) including approx 180 helicopter twin turbine hrs.

Any answers from guys in the commercial world, ex-military especially, would be gratefully received!.....