Install knetworkmanager (most KDE based distributions do this automatically) and look for a "network manager" applet to install in your panel.
The description that you have a "PCI 802.11g" card is not very helpful. There are different drivers needed for different brands of cards, and some of those are proprietary. Other may be in your kernel, although many were not in releases before 2.6.23.
Last edited by PTrenholme; 05-02-2008 at 10:19 AM.