I've been tasked with setting up a wireless link between an office building and a main church building; they're roughly 75 feet apart. The office has Wi-Fi (802.11g) already, and they want it over at the main building. Originally, I was going to just buy a WAP, do a wired run up to it from the router, mount it in the loft, and then get an outdoor antenna mounted on the roof. However, I'm not sure if a WNIC is going to have the transmit power to talk back. They'll be used at the very back of the building; another 50 feet or so. Mostly empty hallway, but a couple walls. Due to this, and the rapidly increasing cost if I were to have to purchase another antenna and WAP, I was considering just getting a WAP/WRT54G, loading it up with some firmware to boost the power, and possibly getting a high gain antenna. Would this be sufficient to link the two? Basically, we need to be able to roam both buildings and have a link anywhere. They're both fairly small, and as I mentioned, the office already has Wi-Fi (D-Link DI-624 - it's not terrible, really), so we just want to be able to share files, printers, and internet access. Also, would it be worth it to purchase a second WRT54G to replace the D-Link? It has been giving a few problems, like odd dead zones and the like. All it has hooked up to it is the WAN (Charter Cable), a desktop, and a printer. Any thoughts would be appreciated.