[GFischer]

You have an MBA, can't you leverage that network? maybe some of your classmates has some insight, or maybe there's a university service that helps new companies (there is one at the university where I did mine).

I would definitely try to network as much as I could, go to startup events, meetups, demos, etc. though your product isn't at the demo stage.

I think pedalpete's advice is good as well.

[zmkahn]

"...though your product isn't at the demo stage"

You mean demo even though it's in advanced stage?

[GFischer]

To be honest, I don't know if you should. But it seems that to raise money you have to put yourself out there and get contacts. I think PG mentioned referrals are a good thing.

Here's Steve Blank's (tongue-in-cheek) flowchart on how to get a VC meeting:

http://steveblank.com/2012/10/17/how-to-get-a-vc-meeting-the...

I've never been in your place so I don't know if my advice is applicable and I live outside the U.S.

The other advice posted seems good.

Edit: other links, from Fred Wilson on how to pitch them

http://www.inc.com/eric-markowitz/fred-wilson-on-pitching-un...

From Wired, how to get a meeting with a VC:

www.wired.com/business/2007/07/how-to-get-a-me/

Another interesting link (european-centric):

http://venturevillage.eu/12-things-you-need-to-know-to-get-v...

hope they help :) and good luck !!! Do tell us if you succeed! (or not, but let's think you will :) ).