A number of folks have already suggested that you need to be introduced, and that's normally the best way to proceed.
It seems like you can make progress without additional funding, just at a slower rate. Is your partner really committed to the project? Asking an angel to pay development salary for a co-founder may be a difficult sales pitch. It sounds like your partner may have lost faith and is now asking for money. You are much better off to proceed more slowly and not go into debt or waste time on trying to raise funds until you have something that you can sell, so that you can use additional funds to accelerate revenue. That being said there are several pitch events a month in Silicon Valley you can go to and meet Angels and VC's.
http://www.vctaskforce.com/
http://www.sdforum.com/ see Venture Funding SIG
http://www.svase.org/ see "First Impressions" event; also you might check out the Startup-U events, it's normally a chance to meet a VC or Angel.
http://www.startupepicenter.com/ runs pitch events (with training) periodically
http://www.angelsforum.com/ have a monthly pitch event (here an introduction probably helps)
http://www.sandhillangels.com/ have a monthly event (again an introduction helps)
All of these are either free or a nominal charge. I wouldn't pay any "introduction fees or percentages" and I would not pay any "beauty contest fees" (e.g. Kieretsu forum charge $3-5,000 to present).
Our firm does not help with fund raising, our focus is on early customers and early revenue, but please feel free to contact me if you have additional questions.
Sean Murphy http://www.skmurphy.com/