How do you have your subnets setup? They should be different...
If your local home LAN is using 192.168.1.X for example, then setup the XP PPTP VPN server to allocate addresses in the 192.168.200.X range for example. Here is how I had my XP Pro box setup as a PPTP VPN server. Ignore the PocketPC parts...
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theillustratednetwork.mv ··· VPN.htmlYou also might look into setting up and using a SSH tunnel instead. Its quite easy to setup and use IMHO. I now use SSH versus a VPN tunnel to access my home LAN.
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theillustratednetwork.mv ··· SSH.html