Ethical design and advertising

Hi Guys,

Im new to the charity and fund-raising sectors. I am graphic designer working with an ethical advertising agency, specialising and dealing only with charities, not for profits and other ethical groups. I have been tasked with the job of finding new business and clients for the firm. This however is a totally new area to me and I was wondering if anyone had any advice on networking and how to make contact with charities. I am not a account handler who does sales pitches nor would I feel right to do so. So it was just to see how you guys deal with networking and making contact with other organisations.

thanks

Iain