Not sure this working for you, you may try on your T42(I use T40) Reference: http://dimitar.me/madwifi-drivers-for-ubuntu-9-10-karmic-koala-or-linux-kernels-2-6-29-and-above/
Not sure this working for you, you may try on your T42(I use T40) dimitar. me/madwifi- drivers- for-ubuntu- 9-10-karmic- koala-or- linux-kernels- 2-6-29- and-above/
Reference:
http://