Software BaseStation?

[Joe Sporleder]

I'm using an old iMac as a Software BaseStation under MacOS X 10.2.6 so 
that I can roam around the house with my iBook. Is there a way to over 
ride using DHCP to get the iMac to share its network connection (via 
EtherNet to a Wireless DSL type network)? I want to use an IP address 
other than 10.0.2.x that is traditionally used by wireless networks? 
This is only a temporary solution, as I will have an AirPort Extreme 
hardware BaseStation with in a couple of week. In other words, I want 
my AirPort network to use the same IP subnet as my EtherNet LAN, rather 
than having to conform the EtherNet to the Wireless.

Joe