Hi,
It's possible to ovulate even though you have PCOS, although often it's irregular ovulation -- long and irregular cycles are common around here! A lot of PCOS guidelines say that if your cycles are usually more than 35 days apart, then you probably have some sort of ovulation problem, and the most likely cause of ovulation problems is PCOS. Doesn't mean you don't ovulate at all. Just not as often and not as well as most women.
Elevated LH & adrogen levels are classic PCOS and only ovulating once in 150 days definitely signifies an ovulation problem! ( How on earth would you ever get pregnant if you only ovulate twice a year!!??)
Anyway, if you can't find an OB/GYN who knows very much about PCOS (and a lot of ob's are not very knowledgable about it) then try an reproductive endrocrinologist ( a fertility doctor) or, if you are not trying to get pregnant, you might try and endocrinologist.
Taking 150+ days to ovulate is definitely cause for getting advice from a specialist and an ob/gyn is NOT a specialist.
I am sooooooo happy with my RE....she is so much better than my ob/gyn when it comes to this stuff.
(Jane, I just noticed you are from Melbourne!! Melbourne is my home town

I'm living in the USA at the moment, but I've heard good things about the Reproductive Services group at Royal Women's Hospital.
http://www.rwh.org.au/repro/endo.cfm?doc_id=5523 )