How to configure PC's that are connected to the router if my provider using VPN to get access to the Internet?

I am going to change my provider. The new one is uses the VPN L2TP to enter the Internet. I have router that I want to use as gate to Internet. Some PC's will have wire connections to router while the others will be connected via Wi-Fi. That router has L2TP feature on it board. Provider indicates on a site that the computers should have VPN L2TP connections configured on client computer when one is connects to the router through the LAN-cable and force us to use created VPN connections to connect PC's to the Internet. But that is a common case. But I have a router with built-in L2TP! Does it means that I may not create that VPN connections on PC’s, plug any computer to the LAN port on a router and stay connected to the Internet constantly when VPN L2TP is up and running on my router? Or I still should run those created VPN L2TP and have them working in-parallel with L2TP on a router instead of simply plug the cable to the LAN port from the computer and have a fun? Should I create those VPN connections on the computers that are connected to the router via wireless adapters?
And still another more specific question (please don't beat me hard! :) ) :
I didn't want to post it as standalone new question:
L2TP on my router-BandLuxe R100 is for Israel only as written in Help section of the web-interface of the router. Does it means that I can't connect to the Internet if I live in Russia?

Please pour some light on my problem and TIA!