Automated Facebook Fan Page Wall Poster Bot

This small compact software should allow me to input url(s) of facebook fanpages and it will automatically run through them posting on their walls for all the fans to see, the posts will be made randomly from a pool of pre-typed wall posts. The software should also be able to rotate facebook accounts between many posts. For example: 1.) Login to facebook account 1, use proxy 1 2.) Post on fanpage walls, 1 through to 5 3.) Logout of facebook account 1 2.) Login to facebook account 2, use proxy 2 3.) Post on fanpage walls, 6 - 10 repeat the process until all wall posts are made - constantly rotating between facebook accounts and their relative proxies. The software should also allow me to input a delay between each wall post. Lastly, I want the software to work only after inputting a valid license. I need this feature as the software might go commercial.