Need A Script To Be Customized (Very Urgent)

Dear Freelancers , I have an script that grabbes videos from different video sites like youtube , dailymotion , googlevideo etc etc . so what i need in that script to be customized , is just a download option on each videos page . There should be a download button on each page of videos like [login to view URL] .The people will be able to download videos in .flv format .So i hope you understood it . this is an very easy project for you as i think. So i am willing to pay till 30 to 50$ for this work done . Terms - You Understood the whole project then only bided. You, will do this work in some hours , not days . You, will get the money after work done. So i am waiting for your quotes , and yes this is very urgent project. Thanks