Setting a lab with Vmware Workstation 10 - Newbie

Hello all. I'm a newbie and I would like to set a private lab.

This is the lab:

The attacker is a Kali Linux machine, connected to the Internet and to a Windows 7 machine with firewall enabled. Windows 7 will have 2 network interfaces: one connected

to Kali and one to Metasploitable 2. Metasploitable 2 will not be connected to the internet and to Kali Machine.

The host is Windows 7.

So I have 3 separate VMs: Kali, Windows 7 and Metasploitable 2. They all run on Vmware Workstation 10 that runs on Windows 7 (physical, not virtualized). So the two Windows 7 are different.

I hope I was clear.

How I have to set the network interfaces in order to set up all correctly?

Thank you all in advance.