Website design questions

I need someone to checkout
www.servecast.com/corporate/index.htm

And tell me what is involved in creating a webcasting website just like it. I need the details like: what language it was written in, what server OS is best, memory capacity, bandwidth I need, hardware considerations, cost, setting up credit account for users, and getting paid…etc.
Can anyone help me soon?

lovetheavguy@yahoo.com