+ 0 Votes See if this helps you out..... Peconet Tietokoneet Updated - 3 years ago The physical switch and the software switch you can enable/disable by pressing FN+ F5 or FN+F6. Also make sure you have XP SP3 installed. + 0 Votes R40 wireless adapter JeffDeWitt 3 years ago The R40 is an older machine, I bet you could find either a wireless card or a whole parts machine including the card on someplace like eBay for not very much money. + 0 Votes What wireless adapter is in the machine? robo_dev 3 years ago Is it an internal mini-PCI adapter? Do you see the WLAN adapter in Wndows Device Manager? + 0 Votes Go into the device manager... Peconet Tietokoneet Updated - 3 years ago And see if there are any yellow markers on any of your componants in there. If there are then just right click on them and choose "Update drivers". Is there any switch on the front of your machine to enable/disable Wifi? + 0 Votes If it did not come with a wireless adapter.... Peconet Tietokoneet 3 years ago Then you can buy one to insert. Or get a USB wifi dongle: http://www.amazon.co.uk/ADAPTER-WIRELESS-DONGLE-ADAPTOR-Compatible/dp/B000W4CXCM + 0 Votes Note that some IBM laptops required you to use THEIR WLAN mini-PCI card robo_dev 3 years ago most IBM laptops have a Mini-PCI slot in the bottom, and have the antenna cables already in the machine. You just pop in the adapter, connect the two antenna wires, and you're all set. Personally, I've had poor results with some USB wiFi adapters, so a PC-Card wifi adapter would be my second choice after a mini-pci. The mini-PCI is nice since it's built-in, so it cannot be lost or damaged. If the R40 is one of the ones that tries to force you to use an IBM mini-pci adapter (which is a Cisco card) there is a program to hack the bios called No-1802. http://www.thinkwiki.org/wiki/Problem_with_unauthorized_MiniPCI_network_card + 0 Votes R40 wireless adapter JeffDeWitt 3 years ago The R40 is an older machine, I bet you could find either a wireless card or a whole parts machine including the card on someplace like eBay for not very much money.