4842 Posting Script

I'd like a script that has the ability to paste a random email address into a form(text field.) I would list the links for the script to visit, the script then would have to identify the text field(skip drop downs if any) in which to paste the information and paste [random]at/yahoo.com. I would also like the ability to control the amount of times the script does this for every link per 24 hours. Sample link of what I would like the script to fill [login to view URL] (I'm not sure if this is possible.) I need this designed, installed and possibly hosted.