Need Classic ASP script to return user IP Address in JSONP by hesers

I need a classic ASP script to return the users IP address in the form of JSONP data. I have the Jquery client side information all ready in place, but I need the classic ASP script to live on our server to return internal NAT addresses as well as external addresses… (Budget: $30-250, Jobs: AJAX, ASP, Javascript, jQuery / Prototype)