Can I make a gamer Tag without an xbox?

I am going to buy a 360 slim soon and I have an idea for a gamer tag and i dont want anyone to take it, so is there a way where i can make an xbox live acount without actually having an xbox?|||I think you can sign up on Xbox.com





EDIT: You can. Here's the link;





http://www.xbox.com/en-GB/live/joinlive|||www.xbox.com