Who are willing to help you out! And you will need to take your time, go slowly and patiently and (gradually) introduce different circumstances of introducing males (ie at walk time, in the house, at the beach etc) to your dog.

Definately find her some regular classes, she needs socialization. How old was your dog when you first got her? Could there be anything in her background which has boosted this kind of behaviour.

Reward (big time) the appropriate behavioural response (when you get them) and persevere. Because she is older this may take a long time to alter.

Good luck.