Hello I play starcraft alot and I works just fine with no lag at all. But lets say that I'm on starcraft on my computer then a friend logs on to my internet connection we cant play together. We can both play in different games but not is the same one it creates tons of lag. I have cable by the way, and what really confuses me is that I went to a friends house and got on his cable with him and we can play together just fine but not at my house! We have the exact same internet! So I was wonder is the problem in my router or modem? or what?