Hi,
Here's an SCN tip for you: if you post multiple questions on the same topic and get detailed answers, then you should mark the questions answered and award some points (where merited).
Otherwise - eventually - no one will respond!
Anyway, onto your question. I personally think the best avenue of attack is to:
- join an organization that is already running SAP, even if it is in some junior position
- make it clear that you are very interested in SAP SD and are willing to do all the training etc yourself
- grab every opportunity you can to learn SAP SD on-the-job
There is little point getting certified if you have no experience. I don't think it improves your chances of getting a job (and it can be quite expensive).
Anyway, just my opinion! Good luck.
cheers
Paul