windows xp : wrong routing with pptp VPN

1. Start => run => regedit
2. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Linkage\
3. open the  element "Bind"
4. place the value  "\Device\NdisWanIp" and copy this on the top of the list.

Bron: http://support.microsoft.com/kb/311218