[asterisk-users] Where are the kernel sources?

[Jim Lynch]

I need to build wanpipe to suport a Sangoma a200 card and when I do a 
Setup install as directed I get:
Kernel source directory /lib/modules/2.6.9-42.0.2.EL/build not found

I did a yum search kernel but didn't see anything that suggested the 
kernel source tree.  Running the latest Tribox on centOS 4.4.

I could use rpmfind, but I've not had a lot of luck ever getting an rpm 
that worked that way.

Thanks,
Jim.