Windows

Thanks for your reply quintar51

All clients have 'Client for Microsoft Networks' installed by default.
VPN clients can ping computers on the network by name and IP address.
I have also opened up TCP and UDP ports 53 (DNS) on the firewall.
VPNClients can map drives to network resources.
But VPN clients still cannot browse the network through 'My Network Places'
This question remains open.

When the VPN clients connect and try to browse the network through 'My Network Places' they only see the local workgroup where they are actually located, they cannot see the domain that they have VPN'd into, which means they cannot see any domain machines or network printers. In one scenerio for instance, the sales rep has two PC's networked in a workgroup at home with an ADSL router and switch and no firewall. We can establish a VPN connection to the RRAS server in the office, which is also the DC for the office domain. When we try to browse the network we can see the local workgroup but not the office domain. We can connect to the office computers (i.e. \\officecomputername\ ) and browse the shares etc. But we want all VPN users to browse the network through 'My Network Places' as its easier and quicker for them.
All VPN clients are running either Windows 2K Pro or XP. The Office network is native W2K with W2K Pro Clients.
Thanks in advance.

Don't need WINS as using DNS. Node type = hybrid as trying to reduce broadcast traffic.
Anyhow I have solved the problem, in lies in static routes which are configure on the RRAS Server. Here is a link which may help to explain:

http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/windows2000serv/deploy/confeat/vpnscen.asp

Static rout configured for the WAN adapter. It all works fine now.