DSL ROUTER WITH VPN INTEGRATION TO WINS

For some strange reason, once I connect my Windows XP pro boxes to my corporate network
and log on to a terminal server at the corporate network I can go ping -a and find the name
and ip address of the XP machine on the far end of the VPN connection and I can ping the
ip of the far end machine too.  But in network neighborhood, no such luck.  Find computer
fails.  Why?

I would like to replace this client vpn stuff (each remote XP Pro machine connecting to the
Nortel VPN router at the corporate network) with a router at the far end that sets up a
vpn connection to the corporate network and then maintains or tells the wins server at
the corporate network about the machines at the far end. Perhaps the best way to do this
is to just setup a server at the far end but I thought I'd ask first.

Any suggestions?

I appreciate the time it takes to reply.

Thanks,
Greg