S2S PPP tunnel on Win2K3 - ISA 2006 server

I have 3 Windows 2K3 Servers all running ISA 2006 connecting different
domains/subnets via Site-to-Site PPP tunnel

Questions #1 - Why when I do IPCONFIG /ALL some of the PPP Adapters have the
name of Dial On Demand Connection name and the other PPP Adapter has a name
of over 30 characters in pointy brackets...?

Question #2 When connecting 2 networks via the S2S PPP tunnel, say Site A
and Site B, the ISA server on Site A willl have a local IP address of Site
B, which is fine. My quesiton is when in site A, I do a tracert to a server
on Site B, 1st I see the local ISA server fine, next I see the ip of the
adddress of the other ISA and a name, but the big quesiton is where does it
get the name from....???? I can't ping this host by name, only IP. The
name is not in WINS or DNS...? It is actually getting a name of a local
PC...?

Question # 3 On the DialOnDemand Adpater, TCPIP settings, I removed the
entry for DNS server as I thought this was to resolve issues. Is this
correct...?

Thanks,
Tom...