Hey sidewinder,
I also had a icao cpl but I couldn't find a job with it so I converted it to a JAA licence and after a job flying a light twin I ended up at CityJet.
If you have the right to live and work in Europe it makes it a lot easier. I stand to be corrected but I think that if you were to have a full atpl in the country that you were converting from and you had the requirements for a JAA ATPL I think you only have to do a few of the exams and I think the flying required is reduced and you would gain a full JAA atpl. If not you'll have to sit all 14 exams and then do the flying- cpl is training as required and the ir is a minimum of 15 hours. I did my ground school
www.bristol.gs and converted
www.bfctraining.co.uk- both really good.
I really enjoy going to work, and you'll fly with some excellent crews.
Hope that helps, good luck
Cheers