Automated Forum Topic Post Script

I would like to have a script made that would allow me to do the following 1.? Type out 50-100 various topics, complete with the message,? and type in the time that these topics are to be posted 2.? The topic will then be? posted on my forum at the specific time I have chose. It is that simple, but it must work properly.? I would like it to be a php script, but I'm open to anything you might want to try.? If you need any other information please let me know.