I have two computers are connected to each other with a cross over cable. One uses windows xp pro(computer A) and the other windows xp media center 2005(computer B) Computer A can share files and take files from computer B, but computer B can't. In fact if you go to add a network place in computer B, It only displays its shared folders, I can't add any from computer A, it says that it is not accessible that I don't have network permission to use the resource network and told me to contact this server to find out if I have access permission. I pinged computer A, and it seems to recieve the file, I checked the lan settings, and it is not locked. Computer A has no firewall, but Computer B has, but it is Computer B having a problem to connect to A. what should I do?