Script to Check links and Other Details

Overall Objective: A script to visit links that I have and test whether that link works and if the video on that site works. I want a script that will go to links such as [login to view URL] and see if a video works. This can be done by looking for text that megavideo prints to tell you that the video works or does not work. I have lots of links from different video sites (approx 50 sites) and you need to find out what message they print out to tell you if video works or does not work. If they don't print anything, I guess its not possible to tell from the Flash player. ;) This is an easy project and needs to be done in PHP (CURL would be nice here) and needs to be done in a few days. Nothing expensive. General Notes: 1) If project not complete within time said. A dispute will be started and you will not be paid 2) I need professional quality work 3) Constant communication is expected so I can give feedback (daily)