Arraanged employement question

Dear Friends,
I am a commerce graduate and I was waiting for the Accountant NOC for Canada immigration however unfortunately this time CIC has removed the accountant profession from immigration category. I have a big ambition that to settle in Canada and therefore I am exploring all ways to go to Canada. I know there are several way to migrate to Canada, of the options is arranged employement, since my company has the Canada overseas operation I can get official employment letter from Canada office. Here my doubt is how we can do the immigration process, the below are my questions.

* What kind of applications that needs to be filled for the arranged employment.
* Is it the same application as for the skilled category?
* Is any links are available to get more help for the entire information.
* If I could do the immigration through our company, is it necessary that I need to work in the same company over Canada, can I move any company that I wish.
* Is it compulsory that I need to be in Canada after the immigration, can I come back to my present country and work here after the all Canada immigration.

Thanks for all for your valued reply.