I was tryen to set up a network on 2 comptuers running windows XP Pro and a computer running win 7...now the 2 computers that are running xp dont even connect to the internet, nor are they networked..and the win 7 computer's lan is not connecting to the internet..i have to use the wireless..please someone help me!1 person needs an answerI do too

there is no useful information in your post...how are your computers connected into LAN? what exactly did you do? from your post I understood, that the 2 xp computers do have internet, while can't see each other, and w7 computer don't have internet and can't see other computers...see, not enough information to start working with.