http://shopper-zdnet.com.com/Linksys...-20796892.html
Linksys WAP54G
It plugs into one of your hub ports and basically just serves to replace/complete the (wired) connection from the port to the radio interface (in your PC) that Radar mentioned.
If you have a newer laptop that radio/receiver may already be present and integrated. If not, they are purchaseable with PCMCIA or USB interfaces.
If you want wireless to your desktop, you will probably want to choose a USB WLAN interface. If not ,you will need a PCI bus adapter (and hopefully an open PCI slot) and they usually accomodate a PCMCIA type radio/receiver.
Remember this when attaching an AP to a hub attached to a router: Your hub is splitting the bandwidth of ONE router port...i.e. you are sharing that one router port's thruput among all of the devices attached to
any of the ports on your hub...
Radar's advice to convince your landlord to go with a wireless router is a good suggestion.
Since the landlord could also have access to your WLAN signal, maybe it would be to your mutual benefit to go half-sies on the cost and put the wireless function right at the source (where his router is now)...just a thought
8)