My review of the 3Com 11 Mbps Wireless Workgroup Bridge at O'Reilly Networks Wireless DevCenter: the 3Com bridge is a small and simple device that lets you hook up to four wired Ethernet devices (via a non-included Ethernet hub) into the bridge to connect to an existing wireless network. No reconfiguration of the Ethernet devices is required, nor do you need a special AP.
Although the cost is high - $350 - it's a cheaper solution than actually plugging PC and PCI cards into existing equipment, and it's an incredible solution for legacy equipment that can't support wireless Wi-Fi networks. There's little administration: plug it in, configure simply, and let it run (all via a Web interface). It's elegant and it gets the job done.
For consumers and small offices looking to connect pods of machines, this beats drilling holes, crimping cables, and running wire. Likewise, some situations require wireless and administering wireless bridges (like the WAP11) is overkill or not an option.
Better yet, the 3Com bridge is the first member of a new revolution in Wi-Fi coming just 2.5 years after the first generation appeared. The new Wi-Fi devices coming down the pipe will be more about building meshes of networks instead of isolated access points that are connected with a wired backbone.