Thats good. Never seen any literature stating that but that is a bonus. With the 100 milliwatt hack, that does make the linksys a very attractive Wi-Fi product for the price. However, if I were bridging business LAN's I would still choose a corporate 802.11b solution for reliability, warranty issues, and performance.
"Would I need a DHCP server in each segment?"
No. The bridge will, in essence, extend your primary LAN across the span to make the remote LAN's a part of the big picture. You would have an omni directional antenna at the main site with directional, Yagi or parabolic dish depending on the distance, at the remote sites. How far would the links be? Actually, if they are very close you might get away without buying additional antennas.