How to configure a Vpn on windows server 2003 with service pack 1.

I have a snap gear 300 router connected This router come firewall /vpn also have a feature of vpn. I’m New and need your help guys please send some links and help me configuring this? My boss need to access this server 2003 from his laptop! I have no idea how to configure. as i Read some white paper and found that i need two nic cards to configure and all but in the end it says its critical configuring network connecting the router. getting confused…?
I’m new student learning new things please help me?