Ok, I found my answer on another forum site and posted it here in case anyone else needs the help.
And I guess you do not need two NICs for this kind of thing:
QUOTE
Ok, this is kinda weird, but it will work.
Pick someone to be HOST, someone to be CLIENT.
On the CLIENT:
Go to Network Connections.
Create a new connection.
Connect to network at your workplace.
Select VPN
Name the connection "LAN GAMES" or whatever
Check "do not dial the initial connection"
Put in the IP address or hostname of the SERVER - and since this is dynamic for most people, even on cable modems, I suggest you get with dyndns.org and get yourself a hostname for this part. put it in this box. If your IP is static, then put the IP in this box, save the hostname lookup.
Click to share with all users and add link to the desktop.
Now you'll be presented with a connect dialog box. Leave it alone until finished with the SERVER side.
On the SERVER side, after you make a username and password for your buddy in the User Accounts control panel applet, go to network connections, set up a new connection.
Choose set up advanced connection.
Accept incoming connections.
In the devices for incoming, don't check anything.
Check Allow VPN connections
Put a check by your friend's name in the list of approved ppl
Put checks in the boxes for the types of networking protocols you want
Click finish
Now go to that connection and click properties.
Go to Networking, then TCP/IP, then properties.
Check Allow Calling Computer to specify its own IP address
Click ok until you're out.
Now on the client side again
Enter username, password
Check the box to remember
Go to PROPERTIES, then NETWORKING
Change type of VPN to PPTP
Click OK
And initiate the connection
That should do it.
This doesn't cover the ports in the firewall that need opening - Since I don't know what you're running I can't give you step-by-steps for that. But the ports you need are 1701, 1723, and 500 if I remember right. 1701 is for LT2P, which requires a certificate. 1723 is for PPTP, and 500 is for the IKE service.
It worked, my friend connected to my machine. But for some reason while trying to play a game via LAN connection it didn't work.
Odd.