http://www.lifehacker.com/software/router/hack-attack-turn-your-60-router-into-a-600-router-178132.php

Absolutely awesome.  Im seriously tempted to do this

I wish my WRT54GC was compatible, this thing is a heap of crap.

Im running DD-WRT on a WRT54GS

Its great on features, A little slower than my Netgear, for DHCP anyway, and my torrent downloads took it out in the first 24 hours, but after changing a few settings things have been fine.

Very impressed, and DD-WRT looked to be the best combination of features vs. usability out of the firmwares available IMHO.

any pics of the setup screens?

This is the only one I found on a quick search, of the wiki, there are prob others if you google?

http://wrt-wiki.bsr-clan.de/index.php?title=Web_Interface