I need to get some professional photos done for a job application abroad, could you tell me where I can get this in Chiang Mai?

Passport photos? Photoshoots? Not quite sure what you need....

Used to have a small model agency years ago but no equipment here, u hv a good cam ?

Try wedding studios in CM. The most of wedding shops have proper studio for dress shooting.

I rented for commercial use last month, it was less than 2,000 B. (studio +Photographer)

Are you looking for a Thai or a foreign photographer? Kojak with a Kodak is well known locally. He's a nice guy and very easy to work with. Check out his site http://www.unitone.org/dbp/

check your PM