Yesterday, I upgraded the wireless card that came in my IBM Thinkpad G40. It came with an 802.11B and because I transfer a bunch of stuff over my wireless 802.11G at home, I really wanted to speed stuff up. I also didn't want to have a card hanging out the PCMCIA slot.
Changing a miniPCI card is really not that hard. I opened the laptop, swapped cards and figured I'd just boot it up with the screws out just in case. I'm glad I did because right after the BIOS screen, I got this message:
1802 Unauthorized network card is plugged in. Power off and remove the Mini PCI network card.
I removed the card and did a little google searching:
http://www.srcf.ucam.org/~mjg59/thinkpad/wireless.html
The 18 byte cmos hack on that page did the job for me.
If you are thinking about putting a new internal wireless card in your thinkpad and you've got one of these models:
A30, A31, G40, R32, R40, R50, R51, T30, T40, T41, X30, X31, X40
you need to go check out that site, download the little dos app and create a dos boot disk (
www.bootdisk.com ).
It's an extra step I didn't plan for and a solution I was very greatful to find.
Thought I'd share,
bigfreak