Yep, hence I said router with modem (such things are not allowed on VM cable
)
To use all 5 IP's you need a modem attached to the network that is running NO NAT otherwise the LAN ports will be isolated from the WAN. Once you set up the modem it then allows you to connect via the LAN ports (and any hub attached to said ports) any external device and allocate that device an external IP from your allocation. Just remember that these internal ports are connected directly to the outside world and are not secure at this point)
If you want one of the IP's to serve an internal network (like a router) then you'll need another ethernet router (one without adsl modem) and it's WAN will plug into the NO-NAT router, you'll manually allocate one of your IP's (using the same gateway/subnet as per the modem) and then using NAT on that router you have your internal network.
You can also allocate a block of IP's to a single device (like for example a webserver with a firewall running) so that the server can use more than one IP (via windows this is simply done on the network card IP properties..
---------- Post added at 09:13 ---------- Previous post was at 09:10 ----------
Just out of interest who's the ISP and how much is the package/speed including the block of 8 IP's, also is there any restrictions on it?