access the interface table by clicking the link highlighted in green.....

make sure that all the interfaces that connect to the internet have NAT ON, it should like the pix below

it is very important that the LAN NIC does not have NAT on

next set up the DCHP Server, click New Scope

fill out the info like this, the Default Gateway and DNS Server must be set to 192.168.1.1

to set up the DNS server make it look like the following

note: the "When resolving name from HOSTS file..." above, this is option u dont have to set this and the

info that goes there is simply your domain name (the group name in the Network Properties under Identification)

to help make things easier u can set up Address Groups, u do this by clicking Settings then Advanced

you will see the menu option "Address Groups", the pic below is self explanitory and u dont have to worry about

any of these things untill u want to set up some more of the advanced options (which i dont think u will need to)