As a buyer, what information should I be providing to a real estate agent?

[Jen Geisler]

When I'm starting to talk with real estate agents and they ask for more information about me, what should I be providing them?   I've been pre-approved and assume I should provide that info, but what else would be helpful that I can send right away during the "interview" process to prove I am seriously looking?  Should I be laying out all my financials right then and there?  Or do I need to wait until I've decided on one realtor to provide the deeper financial info?   Do I only reveal that I have $40k, when in reality, I have a total of $55k but that's for downpayment, closing, renovations, immediate fixes, emergency fund, etc?  What should I leave out, and what should I share?