pwcbsd-1.3.1_1 requires kernel source files *** Error code

[heatherval]

Hi
i would like to know how i can correct this error please
i am trying to install my Logitech web cam


code:

lqx# cd /usr/ports/multimedia/pwcbsd/ && make install clean

===> pwcbsd-1.3.1_1 requires kernel source files.
*** Error code 1

Stop in /usr/ports/multimedia/pwcbsd.
qx#

Thank You

[marc]

You`ll have to fetch the kernel sources, just as it`s said in your error message
Please make a search through the forum - It was explained somewhere before.