Advertiser's Needed

I plan to launch a filesharing website in the very near future.? I have three spots for advertising banners but no banners to fill them. I'm looking for someone to find advertisers for me.? In other words, find people who will pay for a spot on my website.? I know it sounds awkward but filesharing websites get thousands of visitors a day and it should be very easy to sell. Let me know if you have questions.? Also, tell me what you can do for me.