Actually, for filesharing I'd use NFS, it's a bit faster than SMB.
Just add the mount point to /etc/exports
on the other machine
192.168.1.1:/home/shared /mnt/shared nfs
or similar, that is simplified, I'd assume your network is up and running by this stage,
I.E. you've made a crossover cable and assigned IP address's etc.
The rest is easy. But when in doubt, read about network setup, www.tldp.org
is a great source of info.