How to upload you tube video url through asp.net

Hi , i am working on a social community site.In my site there is a portal where user can upload the you tube URL in my web page.That means there are three fields for the user.user will simply give the url name , and title and comments.Once the user will provide the URL of you tube video my intention that i can save the url link in my databse, and the user can add the video file in his portal like same in orkut.As orkut provides the user to upload you tube video in his/her video portal, i have followed number of documet, where the search option for the user is provided , but i m not looking for that, i m simply looking for the user to give the ural link from the you tube  in my portal same in orkut, and the video will be shown in my application to the user,can any one guide me for this...this is where i am really dumbed.