My wife works in a doctor's office. Their internet layout is a cable modem with a wireless router. Their LAN traffic also goes through the router. The network consists of two wired clients and three wireless clients. Me being somewhat IT savvy, I find myself helping them out from time to time. Anyway, one of them has a laptop that doesn't seem to work with their present AP, so I've suggested we get a WRT54GL to replace their very old d-614+. The best I can come up with is the two are simply incompatible. My concerns for their network are two fold; that everyone can get on the network who should and people who shouldn't... can't get on. Digital patient records on the network makes this a huge must. So I'm thinking the WRT54GL solves the incompatibility issue. I brought the offending laptop home and it works fine with my network running a WRT54GL w/ HyperWRT Thibor. Can someone suggest setting up a security profile for this network? I'd like to run WPA on it with MAC filtering. My only issue with MAC filtering is that every time they want to grant someone access onto their network, I have to do it. I've pulled the security article here, but I have say this isn't a subject I know much. Anyway, is there a flash available that one could set up a sub-net of sorts so that various users could be granted some kind of throttled internet access, with no LAN connectivity? I say this because they have mentioned that drug reps (and some others) do occasionally request if they can access the internet. Sorry if this is all over the place... let me know if I can clarify any points and TIA.