Bah, RR supports OSX on a "Best Effort" basis. What this means is that they will make the best effort to set you up, but if it doesn't work then you are on your own. It also means that they take no responcibility for getting your OSX box up and running and that it may not be possible in some configurations.

[link|http://www.triadtwcable.com/products/elinkinstallmac.html#elmac|RR Mac Install instructions]

[link|http://www.triadtwcable.com/products/misprr.html|OSX "best effort" support]

I tried some searching, but I am unable to find a decent RR OSX configuration. My advice is to get a Cable/DSL hardware router or use a low end PC running Linux or OpenBSD (Or even Darwin) as a router for your OSX box.