I would like to use a Cisco VPN client with a Netgear FVS318 V3 ,,,,,I know how to configure Netgear FVS318 V3 for IPsec,,,because I am using TheGreenbow client now with it.

But I do not know how to configure Cisco VPN

I just want to find out how to do that ? specially with the option "Group Authentication" which it asks about username and password.