I want to send a proposal to Yahoo to sponsor me for an adventure travel that can be followed on the website?

What is the preferred format? Who do I need to send it to?
Can some one from experience tell me some specific details that yahoo looks for?

Contact advertising and sponsorships at sponsorships@yahoo.com
Your proposal shold be submitted as a Word doc.

I'd say it's a pretty long shot, unless you're Brook Burke.