i am CCNA certified, i set up a LAN using only a D-LINK switch. a computer in the network refuse to see neither the workstation in its workstation nor others in the other workgroups. But the ping command is successful to all computers on the network. This problem has deprived other computer on the network to share resources with this computer. i ve done all i could but all effort was put to avail. please let someone help with clue to solve this problem before i loose my Job