How do i connect my ibm thinkpad a21m to the internet

SOURCE: IBM thinkpad 2647 T21 LAN Card Driver files needed...

if you are using the internal LAN card to connect to the cable modem, no additional drivers will be needed. However, you would need to configure TCP/IP settings to use a DHCP server to automatically configure the IP address. you would also need to check whether or not you have the right CAT-5 cable. you might need to buy a crossover cable.

hope this helps

SOURCE: IBM Thinkpad A21M

your cmos motherboard battery is flat and needs replacing

SOURCE: Wireless network connection on IBM Thinkpad

Ok when looking at your question i became very currious as to the answer myself so i did a litttle research and i think maybe the info on this page here: http://www.eggheadcafe.com/software/aspnet/33307589/certificate-required-to-c.aspx
could be of some use to you . even though the link describes a diferent network adapter the information there is about the same exact error on a router of the same type

I hope this information helps ... if it does not then let me know and i will find some more answers since i used to have the exact same laptop that you have now R40

SOURCE: bios password

ibm think pad r40 bios password cracker

SOURCE: IBM THINKPAD T43. I can find the switch for my ibm thinkpad T43

Are you sure you have a wire card installed? If so, then try this:

1. Right-click the My Computer icon and select Properties.
2. Click the Hardware tab and press the Device Manager button. The network card should appear under Network Adapters.
   Note: If the card has a exclamation mark over a yellow background, then this is an indication that the card is experiencing a problem. Go to Driver download step 5.
   

1. Verify that the radio is enabled.
   It is possible to disable the transmitter of the wireless card without Device Manager showing any problems.
   Note: Follow the instructions provided to enable wireless card.
   
   • Most wireless cards will put an icon in the system tray (the line of icons in the lower right corner of your screen). Right click this icon and it may have a menu option to enable/turn on the wireless radio.
   • Some systems come with a Wireless Radio switch to disable the wireless radios. The wireless radio switch is usually located on the front side of the machine. If you are having difficulties with wireless connections, make sure the Wireless Radio switch is set in the On position.
     
     
     
2. Check for association to an Access Point.
   If you double-click the previously mentioned system tray icon, the configuration utility of the wireless card will appear. This utility will be able to show the status of the wireless card, showing what channel the card is using and what signal strength is being received. It may be difficult to maintain a connection if signal strength is low due to either interference or distance. For example, interference can be caused by 2.4GHz cordless phones, other Access Points in the area, and physical structures such as load bearing walls or metal partitions.
   Note: The utility can be used to configure the wireless card settings, but if using Windows XP Zero Configuration or Access Connections, you will need to use those programs to actually configure the wireless card as they will overwrite the setting of the utility.