I am not Sure about agent, But you can ask around where you are working.
Maybe you might have some burmese friend or coworker. If they don't know, i can give the point to start, ask to Taxi driver or Bus Driver.
Most of the Bus driver can do that.
There was some training center for car driving, they know the procedure.
Regarding Cost,
for burmese (unofficial) real license, cost around 40$.
just give the photo, you will get driving license in 3 days. no document required.
For Foreigner, will be more. between 40$-200$.
Make sure you pay the money to trusted person.
its depend on you, how you want to do? official or ????
If you want to do official, just walk straight to the Traffic police main office and ask.
They will ask many document and many record even your great great grand father name. its long procedure.
So,
I hope you got the points.