Updates to Youtube Clone

I need a few changes to my youtube script. I want first, in order for visitors to view a video on my site, they have to be logged in. The other changes can depend on what options you can give me easily. Prefer to have the videos bigger and the right colum like [login to view URL] with: *what's new *popular videos *active channels *active groups These changes should not slow down the site. Let me know what you can do that it doesn't slow down the site. At the minimum I want the members to be logged in, in order to watch a video. My site url is youtubenude.net. you can contact me directly through this site= [login to view URL] . I prefer this job to be easy for you. I don't want a programmer who doesn't know what he is doing or taking guesses so that the whole site doesn't function. I don't want any bugs. If you have something that makes the site faster that also helps.