:-) You are getting it.
There are different ways to have a VPN setup like this at home with (hopefully) your current router.
1. Have a VPN connection with your home router via PPTP.
2. Have a VPN connection with your home router via OpenVPN or other software.
3. Have a VPN connection with a server in your home using a VPN pass-through on your router.
4. Have a VPN pass-through connection but remote control your home computer to connect IT to your choice of internet pages, etc.
Number “1” above is the easiest router-based fix, and directions for using DD-WRT (a free firmware upgrade for many routers) to do this is available here:
http://www.dd-wrt.com/wiki/index.php/VPN
DD-WRT is a free, Linux-based, open source firmware that works on many brands of routers. It is considerably more powerful and flexible than normal router software.
Number “2” above can be walked through here (but is rather more complex):
http://www.dd-wrt.com/wiki/index.php/OpenVPN
Number “3” above can be done with about any router with a computer acting as a VPN server (using OpenVPN or other software).
Number “4” above might be the easiest all-round fix, but it may mean the home computer won’t be useful for a home user during that time.