Craigslist auto poster

I need a Craigslist Auto poster. I would need a program that would allow me to post multiple ads to Craigslist at a very fast rate. I need the ability to make every ad unique although they have the same content. I need the ability to change the email address log-in within the program. A plus would be a program that can also auto post to [login to view URL] I would like for the program to be similar to the programs that [login to view URL] offers.