Subject: odd problem with a *established* PPTP VPN connecting a 
portable using a SPRINT 595U aircard to my home network.

OS's, Equipment, and configurations:

*On My Home Network Side:*
 a M0n0wall APPLIANCE using a Wrap 2e board running the LATEST firmware 
update.
 It has a built-in PPTP VPN server that is enabled and allowing a 
authenticated user to pass ANY protocols to ANY LAN subnet on my network.

I can successfully ping in both directions.
I can see shares normally from within my network


*On The Portable:*
Windows XP Home,
A dial-up connectoid to connect to the internet running PPP and TCP/IP, 
File & Print Share, Client For MS networks for protocols - NO LOCAL 
FIREWALLS _This connectoid performs flawlessly to the I-net._

A second connectoid to connect to the VPN running PPTP VPN and TCP/IP, 
File & Print Share, Client For MS networks for protocols - NO LOCAL 
FIREWALLS.

These connectoids _WORK_ in as much as:
A.  I CAN browse the web pages served from devices on my home network
B.  I can FTP to any of my FTP enabled devices on my home network.
C.  I am able to ping to machines within my home network.
_D.  I CAN_ click on: "My Network Places"-"Entire Network"-"Microsoft 
Windows Network"
     and see my workgroup name which is NOT "workgroup".

HOWEVER, IF I click that workgroup name, expecting to see a list of 
machines that have MS shares on them. I get a long pause, then a error 
message: " XXXX is not accessible. You might not have permission...."

If I simply disconnect the Sprint thing, and connect the portable via 
the LAN jack using the SAME protocols.  I SEE what I expect to see.


*/WHAT is wrong? /*  I have spent (No joke) at LEAST 70 hours trying to 
figure out HOW to setup this thing and this weird problem.  A 2 hour 
call to Sprint 's level 2 support and ultimately their subject matter 
expert  ultimately got this reply: " We Don't know"   Which, was a 
honest answer from them, and WAYYYYY beyond their normal scope.

Thank you all.