Support? Who needs more support than reading the manual? (Or reading what you can get at
LinksysInfo.org.). Seriously, these are simple boxes once you have some terms translated (and it's Apple's fault you need this-Linksys uses the same terminology that just about all the network hardware companies do).
Now for the real issue. Since Cisco bought Linksys, they've come out with a number of new versions of the venerable WRT54G, notably versions 5 and 6-which suck. The hardware is neither as reliable as the earlier versions, nor as capable. These versions do NOT run a Linux OS, CANNOT be loaded with third-party firmware, and do not behave in the way Linksys users have come to expect. When at all possible, get a version 3 or earlier (and this can be done at any number of stores-they don't send older boxes back to Linksys, they just mark 'em down). Check out the
Wikipedia article on the WRT54g series routers for more details.
So it's a pain to figure out what they're talking about at first, but once you get it, it's easy.
Art, at least you didn't say that they had "horrible Mac support." They don't. They just don't have Mac applications-and you don't need them. Their support for Mac users is just as bad as their support for PC users-and this is another area where being bought out by Cisco didn't help anything.