I have now been trying to make a basic pong game with networking for almost two weeks now. The farthest I ever got led me to ball update problems and I have run into many problems I thought would have a simple fix. I hate to ask, and also feel uncomfortable doing this because I don't want the impression that I'm trying to get someone else to complete my stuff but, would anyone here be willing to make or contribute a network enabled pong game? I would really appreciate a sample that I could compare my code to so I can figure out what I am doing wrong and what I can improve on.

I have a networking sample here if you don't want to use Live.

Thanks for replying. Even though I am using the XNA networking I can still use your code to learn other networking concepts. I am still open for help.

I beleive you have probably stumbled on one of networkings worst problems and its called lag. what you need is a Network Smoothing Model which will lerp the pong ball. this is a good idea i will begin the tutorial tomorrow okay? it probably wont utilize live as im kinda getting Lidgren a good standing here in the community  so ill use lidgren to do all of the updating and stuff but it will be very similar, you may even want to switch over to that.

Believe me when I say it's not lag. I'm testing on a LAN through System Link so thats definitely not the problem. My problem is that I don't know how to make a ball in pong update correctly over the network since the ball is not on just a local machine. Thanks for the help and please notify me when you have your tutorial ready.