Hi teladoy,
ok, I will try to help you. My X60T was not equipped with a Atheros card, so I had to buy one. I looked out for a Thinkpad compatible and found one on ebay. I also cared for OSX compatibility, but in that case it did not work out directly. But as I've followed this guide:
http://www.insanelymac.com/forum/index. ... opic=87574 I just did what's explained there:
Wireless
Do you have the ThinkPad Wireless MiniPCIE card? If so -- you have Atheros, and you're ready for wireless! Have the Intel 3945 card? You're screwed! Get on eBay and pick up the Atheros controller, you can search for Thinkpad wireless atheros, or by FRU, which could be 39t5578, 39t0499, or 40Y7026. I had to replace mine, and it's not terrible. Remove all of the keyboard screws and the bottom half of the "board" screws on the bottom of the machine, lift up the palmrest, and it's right in front of you. I will not be held responsible if you damage anything. wink.gif Please note that other cards, such as the Dell 1490 series, will NOT work with your ThinkPad. Lenovo, in their infinite wisdom, has a white list of PCI IDs that they will allow as a network controller. Putting that card in your system will just give you an error message asking you to get it out of that laptop.
To get your Atheros card working, pop into a terminal, and go to /System/Library/Extensions/IO802.11Family.kext/Contents/PlugIns/AirPortAtheros.kext/Contents. Edit Info.plist with vi, nano, pico, or your editor or choice. Go down to IOPCIMatch, and under that, with all the <string> entries, add <string>pci168c,1014</string>. Save and exit, and manually load it by entering "kextload /System/Library/Extensions/IO802.11Family.kext" You'll be able to head into System Preferences, Network, and watch as it adds an AirPort option. Hit the 'Turn AirPort On' button, and you're in business.
If you can't get it to turn on, go to "Advanced", and click some checkbox, like "Disconnect when user logs out". Hit Okay, and hit Apply at the main Networking window. The Apply button will turn your card on, and it will work from then on out. Have fun!
For me the ID is not 1014, I had to look it up in in the Windows device manager. After inserting it, my wireless worked. I've backed up the kext and insert it with kexthelper everytime I reinstall OSX.
One thing: I've noted that after the latest install the card does just connect with B standard - don't know whether it was like that all the time...
I hope that does help you.