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What I need is a device that: -Will connect my 4 computer LAN (2 XP, 1 XP/Linux dual boot and a Linux Box) to ADSL - Will also connect my LAN to a 802.11g WiFi internet service in the future <<<<<<<<<
I think you're after something called a WiFi-Ethernet Bridge. I did some Googling and came up with
http://www.wirelessnewsfactor.com/perl/story/15096.html http://www.neoseeker.com/news/articles/headlines/Hardware/1502
My understanding is that a regular WiFi access point connects a group of machines, each with wireless adapters, to a regular Ethernet system. What you want is AAF, that is an Ethernet cluster with a shared wireless link. I'm fairly sure these exist, but not at the price level of the former. Perhaps you should consider using a Linux system as a bridge. Fit this with an 802.11g adapter so it can connect to the local access point, then set up masquerading to allow other machines beyond it to access the wireless network. This ought to be cheaper than buying a custom box to do the job.
-- GT