USER getting Error 721 when trying to connect to Windows VPN

Hi,
The setup Works:

(office)
Windows 2000 Server running RAS
Linksys DSL SOHO Modem/Router

.... Internet

(Home)
Linksys CABLE Modem SOHO modem Router
Windows XP Pro

I'm able to establish the connection and connect to the network and use the Windows network just fine.

Another user, who has a Netgear router at home with XP Pro get's the message:  Error 721.  And he can't connect.  The RAS server shows no sign that it's even seen the attempt at connection.  Nothing in the ias log, nothing in the event logs.

What's curoius is that when I examine the Incomming traffic log of the Office's router I get one hit from his IP going to port 1723 (the right one) and another hit going to port 47878.  Of course, 47878 isn't forwarded anywhere.  Only 1723 and 47 are forwarded.   The only info I find abut 47878 is that it's associated with a program BirdSpy2 which is a trojan horse program.  The only other info is in Chineese.  

Is the use of 47878 normal?
How do I get this user connected.?
LVL 1
AndrewNovickAsked:
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drev001Commented:
Have you enabled PPTP Pass-Through on the Netgear router? What model is it?
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AndrewNovickAuthor Commented:
The remote router is a netgear FM114P.
The user can't find pptp pass through on the setup screens.  But He'll keep looking.
Andy
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AndrewNovickAuthor Commented:
Problem turned out to be various things on the client computer including a cisco vpn solution.
Stopping cicso's vpn pretty much fixed the problem.
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drev001Commented:
Glad to hear it. Request either a refund or deletion in the community support section.
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