VPN

In windows 2000 Server just enable the routing and Remote Access service this will allow your computer to receive VPN connections. On the clients side:
If you use any version earlier then Win2K:
Add a VPN adapter using the Network control panel.
Create a Dial Up Connection and make sure it uses the VPN adapter created above.
In the address type in the IP Address or Name of the VPN Server (if it can be resolved from your local computer).
In Win2K and later create a new connection by right clicking on the My Network Places and choose propertis. Double click Make new connection. And choose VPN. Provide address as above.

I need more detailed information, not a general answer. For example: Once the VPN Server is created , How do I pick the VPN protocol to use L2TP, or PPTP. Where do you specify the protocol to use. Also when it comes to certificates they are so many,how do I choose the right certificates to use?

Sorry but that wasn't in your original question.

You have two ways to make a VPN work, one is VIA RAS Server set to accept VPN connections but you then need to put a hole in your filewall Port 1723, to your network, Otherwise you can setup VPN service on your Router it it can do VPN. In the Routeryou should be able to choose what security you want IPSec, PAP L2L what ever is available to your Router. I prefer to use Routers and not open up a W2K server to VPN access directly. Look at your VPN service in W2K and there should be your settings.The newest is IPSec look at this instead good security

Techrepublic posted a detailed article you may want to look at regarding setting up a VPN via RRAS. The link is:

https://www.techrepublic.com/article.jhtml?id=r00220001018jim02.htm&src=bc

The article is from October of 2000.

By the way, if you solve a problem regarding permissions denied when trying to access properties, please let me know, as it has me stumped.