Driver problem

[triggazDDR]

Hi im currently very new to linux and i am having a problem updating my madwifi driver to madwifi-0.9.4 on Backtrack 3. (USB Version)

i have followed all the steps on getting rid of the old drivers but while trying to run make && make install its displaying the following error.

/bin/sh: line 0: cd: /lib/modules/2.6.21.5/build: No such file or directory
Makefile.inc:66: *** /lib/modules/2.6.21.5/build is missing, please set KERNELPATH.  Stop.

i understand i have to add in a few more lines of instructions to make this work but i just don't know what.

[marked]

Are you sure you downloaded the USB iso and not the CD version. The CD version doesn't come with the kernel headers that are needed to compile programs/drivers.

[triggazDDR]

hmm seems like there was a problem with the transfer i re-transferd the USB Version and now it seems to be working fine.i am guessing that modules didnt copy over to USB stick fully. thank you tho.