I have 3 pretty standard WIntel boxes, plus a newly setup multi-boot #4 with 3 OSes, all connected via ethernet switch by TCP/IP to operate under one same workgroup. Booted in 98 SE or XP Pro+sp2, Box #4 Network Neighborhood sees all 3 others, and vice versa, and data transfers perfectly between all. However, booted in NT4 Wks+sp6a, Box #4 Network Neighborhood sees none of the 3 others, and vice versa, thereby data can't transfer between Box #4 and any other. Also, booted in NT4 Wks+sp6a, Box #4 fails to ping any of the other 3 boxes, whilst on the contrary all 3 others succeed in pinging Box #4. Where does the problem possibly lie? Any directions will be highly appreciated. TIA!