Web Integration of C# Game

Question

Hello, I am working on a multiplayer turn-based Web game and am in need of some design direction. My design of the game w/o any web interface is thus: 

Consisting of one World object, containing a collection of Player objects that do various things upon themselves and upon other objectss, what they do is unimportant with regards to my question I suppose. 

So what I'd like to do is integrate this model into a system wherein on the web interface each person has an account, which has a reference to the Player object that cooresponds to that account. I'd like to do this with something like ASP, but could somebody who can see what I am trying to accomplish please direct me to a resource or briefly describe the process I would need to do to accomplish this end. It is getting to the point where I need to start implementing this to the web so any help would be greatly appreciated, even if it just a link to the information I need. I understand my question is somewhat ambiguous but I'm having a  hard time desscribing what I need when I don't really know what to call what I need. Thanks in advance.