I have a D-Link DWL-1000ap wireless hub and a Hawking Router. I had the router before I bought my Powerbook, I added the Wireless hub later. I use these with my Powerbook via internal Airport card, I was also able to easily get my friend's Powerbook on my network with his PCMCIA Lucent 802.11b card. As well as the Beige Mac G3 and 2 PCs at my house which are wired to the network. The D-link was on sale a while back as was the Airport card, the whole thing cost me around $180.00, the router was $60.00 after rebate, I've since seen routers as low as $29.00.
I can walk 2 houses in either direction on my street and maintain a connection. I can also connect from any point in my house or any part of my front or back yard. If I wanted to I could share my connection with my neighbors. Then Hub can be secured by excluding mac addresses or wep encryption.
The cool thing about the D-link vs. the Linksys and Netgear stuff, I have used, is the D-link will do regular plain old Appletalk, all my Macs whether wired or not show up in the Chooser while the others I tried will not. You can of course do Appletalk via IP with the other products. I just like having everything show up in the Chooser.