Operate A Website From A Shared Internet Connection?

I am designing a network internet connection to our 20 apartment block. The WAN is Ultima up to 40mb/s and the take up is expected to be modest in terms of throughput. However I have been told that two apartments want to run their own non commercial web sites which currently operate on adsl with ddns provision from TZO. The netgear vdsl router supplied by the ISP will obviously have port forwarding but how do I cater for more than one LAN destination requiring port 80 traffic??Surely I dont have to have an in-block DNS.