Craigs Lst Automatic Ad Poster

I want an automatic ad? poster for a very popular classified ads website. It will need the ability to automatically? type in the captcha. Other features should include: Ability to use proxies within software to prevent banning with automatic rotation. ? Automatically posts to any category at intervals such as every day, every week, every two days... The program will checks if the ad is already posted. If it is then the program deletes that ad before posting it a second time.