I am running Win Server 2003 SE SP2 on a Workgroup with some XP and Win7 V6.1 Build 7600 PCs. From server 2003 I can see the XP machines OK but not the Win7 PCs. All firewalls are off. I have the Win7 PCs set to a Work Network and the Win7 PCs can see each other OK. All PCs are connected through a 8 port switch via Ethernet and all have Internet access. I can Ping each PC from Server 2003. DHCP is provided by a the Internet router/firewall and DHCP is off in Server 2003. Help anybody??