The requirements for bringing your parents permanently are here:
http://www.cic.gc.ca/english/immigrate/sponsor/parents.asp
CIC only accepts 5,000 applications per year. The process will re-open again this January.
In order to qualify as a sponsor, you will have to provide Canadian tax returns for the last three years to prove that you meet the minimum income requirements for all three years to sponsor your parents. Also, the income must be from Canadian sources (i.e. from a job in Canada). So if you have recently arrived to Canada or don't meet the minimum income requirements, you will have to wait until you do before you can apply.