Looking for a Telesales Expert to Sell Online Ads

Hello, I'm building a series of online websites that I'm going to need your help selling adspace on. The adspace includes: - Directory Listing - Small ad on a sub page - Home page ads - Premiere ad packages I'd like to generate $300-500 a month in ad revenue from each site, and I'm willing to work out some sort of hourly rate + commissions or any combination of that. Experience in selling online directory listings and ads a plus. Must be based in the US.