Wireless 802.11g is still a work in progress for most equipment, as the spec.'s were just recently finalized. So you must make sure you have the latest updates for router firmware and drivers. Range and data rate specifications are not always achievable with "G" boxes. And one out of 10 have out of box or early life failure problems and have to be replaced/exchanged.
Make sure you get a sealed and recent production box, not a returned or open box.
Some people have been having trouble mixing Linksys wireless routers, and others, with Windows XP, due to problems with Windows XP Net Zero Connection software. There is a minor three second "lag" problem every one or two minutes. Only seems to be a problem for gamers. Going with the $30 PCTEL.com wireless software support solves these problems. The latest XP Windows Updates seems to have fixed the problem with some brands of wi-fi routers, but not the Linksys.
The Linksys does have the most options built in and is more flexible, and the most often recommended. Both Netgear and D-Link are good enough for home use.
In planning your installation, make sure the wi-fi router is placed at least two feet (three or more is better) from the system and any display. That it is not next to a wall with metal supports, bricks or electrical wires, or near metal cabinets. That there is direct line of sight to area's where it will be used from most of the time, and that it will not be accessed directly from above or below the router (Has trouble directing the power lobes up and down.) And that there are no 2.4Gh phones or microwave ovens used within range.