Thank you for your reply. Last question, I am 38 right now. Do you think my student visa will be rejected?
I think I should apply for Masters and then try to get student visa. If I apply for a diploma from a college (even if it supports PGWP) the immigration officer can reject me as he/she may think I am applying on to stay here or get PR. (I last completed my masters in 2005).
Let me know what you think and what I should do.