Two network configuration

Hi Experts:

I am running a 40 user SBS 2003 network using one NIC.  I have comcast that has provided 5 public IP's.  I am only using their SMC modem/router, and a linksys for wifi (and obviously a couple of switches).  My server provides DHCP.  My client would like to offer wireless throughout the building.  I would prefer to setup a seperate network for internet access only.  My server does have a second nic. Can I get some suggestions / assistance on configuring this?  I will have to add 2 or 3 additional WAP's.
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Have a Separate IP range for your Wireless .

NAT your wireless IP address with Public IP .

Use Internet Creating New range of DHCP scope for New IP range
sntrouble07Author Commented:
Thank you, and I completely understand what you're saying, but I'm not sure how it should be done.  If you have a link, or can instruct me step by step, that is really what I'm looking for.  I understand the theory, but not sure how to complete the task.
If the internet access network is for guests as well, it is best to setup a vlan just for the wireless network.   YOu will then restrict access so that VLAN can only access the web and not the rest of your network.

We can give you some step by step instructions but need some more info.  What network switches do you have in place?    For your additional AP's, do you plan on purchasing business grade access points such as Cisco Aironet 1100 series AP's ?

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If the Wifi that you need to install throughout the building is for internet access only, no network access, and if the SMC modem/ router has more than one LAN port (a switch connected to a single LAN port here will work too)...the following will work:

Connect another wireless router to one of these LAN ports and configure the WAN side of the router for one of your 5 IP addresses from Comcast. Configure the LAN side of this router to a different subnet to that of your existing network with DHCP enabled. To the LAN ports of this router, you can connect additional WAP's. Make sure that when configuring the WAP's, you use the same encryption type and key but put each device on a different channel.
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