You just want to run IRC from a client machine? If so the only problem you should come up against is ident not working properly on the client and thus most of the irc servers won't allow you to connect. This can be solved in 3 ways.
1) use servers that don't care about ident
2) install ipmasqadm and port foward 113 to the client and use mircs(if this is the client you are using) built in ident server, make sure it's turned to "use ident on startup only"
3) get and install a masqerading ident server, this is gunna be a major job as you will need to do a custom e-smith install and change a couple files in e-smith so it doesn't revert on next change.
If it were I doing this i would just install ipmasqadm, it's by far the easiest solution.