For interest, as I'm new to Wireless Networking I started with low cost D-Link (Low Performance too!) equipment - Styled "Airplus".
An ADSL Modem/Router (604+) goes into a 5-way Switch (1005D) and thence into local workstations via UTP. Also in use is the 604's wireless option to another worksation and a laptop. They use DWL 520+ and a 650+ respectively.
As long as I am using the wireless link it seems to hold together very well. But if I go a way for an hour or two (eg watching Henman at Wimbledon) when I come back the wireless link is broken! All it takes is to reboot the 604+ to get the connection back.
This is all at 11b standard of course. I'm sort of impressed but not quite.