The ThinkPad T30, some models of the T23, A31, and R40 systems are shipped with an ThinkPad High Rate Wireless LAN mini PCI adapter. The Linux command /sbin/lspci reports it as:
Network controller: Harris Semiconductor Prism 2.5 Wavelan chipset
Under Red Hat Linux 8.0 and 9.0, as well as SuSE Linux 8.1 and 8.2, use the "orinoco_pci" driver, which is usually automatically configured for you. Otherwise you can get a driver from the following websitehttp://hostap.epitest.fi/.