Need help setting up public and private network

[tgbyhn10111]

Hi

I need to set up a public and private network both with wireless access to the internet. Our private network will have a nas drive plugged into it and we want it to be secure from the public network.

I have the following kit:

BT Voyager 2110 modem router
BT/2wire 2700HGV modem router (can this do what I want on it's own? or do I need to connect the two routers?)

Thanks

Pete