Smackre,
What is the wall made of, and how thick is it?
Also, many of the wireless "hubs" (called Access Points) now come with combined switches & routers built-in. In other words, if you pay just a little bit more, you can get an Access Point that has a few ethernet ports (typically 3-4). You can plug your "wired" PCs into these just like a normal hub/switch.
Mr Mephisto
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