I think that the most important hing is your knowledge and skills.
Once I've been working as an advisor - the company wanted to know who (i think) would fit the best. We had a guy with a certificate that 'confirmed' his skills; skills he learned at the course and used as a template - and he had nothing to show (except his certificate). Immediatelly after he left the room, we have wasted his application. Why? The certificate is only a piece of paper - the real value is knowledge and skill! If company likes you 'offer' then you get the job :-)

Update: Sorry for duplicate entry - my browser had critical error and by mistake I've wrote my reply second time.

Good luck!
Greetz, Tom.