How do I route two public IP addresses to the same web server on LAN? 1

[dalchri]

I have a Netopia R910 router that has one public, static IP address.

Current configuration:
LAN IP Address: 192.168.0.254
WAN IP Address: 24.229.73.7 (For example)
24.229.73.7:80 is forwarded to 192.168.0.2:80 (The web server)
NAT is enabled for all other (~50) computers on the network
I have a VPN connection setup with another Netopia R910 router elsewhere on the Internet

My ISP will be assigning a second IP address to me: 24.229.73.8 (For example)

I need to make 24.229.73.8:80 forward to either:
1) 192.168.0.2:90 another port on the same webserver
2) 192.168.0.3:80 another NIC on the same webserver

How do I tell my Netopia to do this?

Here are some of the terms using in the setup screens:
WAN Configuration
Connection Profile
Establish WAN Connection
ATMP/PPTP Default Profile
IKE Phase 1 Configuration

System Configuration
IP Setup
Static Routes <- this would be my guess
Network Address Translation (NAT)
Filter Sets

I sort of understand what needs to be done, I just don't understand the terminology used to communicate this to the router.

Thank you for any pointers to documents that would explain this to me. I've already been through the netopia manual but I'm afraid I need a formal education in networking to comprehend some of it.

 

[bcastner]

http://www.netopia.com/en-us/support/technotes/hardware/NQG_025.html

 

[dalchri]

You are most helpful! Thank you for saving our company a $120/hr outsourcing fee!!!