Internet Connection Sharing 2 FC1 machines
 

I have 2 FedoraCore-1 machines networked together. I would like to share the internet connection on fc2 with fc1.....

fc2:
eth0
ip address 169.254.55.236
sm 255.255.255.0
dial up internet conn. on /dev/modem

fc1:
eth0
ip address 169.254.55.235
sm 255.255.255.0
no modem installed

where do I start ?

It's real simple. Just make sure you have Iptables or Ipchains ( prferably tables ) compiled into your kernel or loaded as a module, than obtain the Iptables or Ipchains binary ( probably included with your Fedora) and setup a NAT / IP_MASQUERADE script. There are several tutorials and HOWTOs on how to do this, and if it takes a while sinking in there are plenty of example scripts out there whcih will work right away with almost any setup, try googleing for 'iptables NAT example'.

Have fun.