Error in ztdummy installation

hi
i am install ztdummy in debian 3.1 ,
we get an error

debian:/usr/src/asterisk/zaptel-1.2.6# make linux26
ZAPTELVERSION=“1.2.6” build_tools/make_version_h > version.h.tmp
if cmp -s version.h.tmp version.h ; then echo; else
mv version.h.tmp version.h ;
fi

rm -f version.h.tmp
/lib/modules/2.6.8-3-386/build
make -C /lib/modules/2.6.8-3-386/build SUBDIRS=/usr/src/asterisk/zaptel-1.2.6 modules
make[1]: Entering directory /usr/src/kernel-headers-2.6.8-3-386' make[1]: Makefile: No such file or directory make[1]: *** No rule to make targetMakefile’. Stop.
make[1]: Leaving directory `/usr/src/kernel-headers-2.6.8-3-386’
make: *** [linux26] Error 2
debian:/usr/src/asterisk/zaptel-1.2.6# make linux26
ZAPTELVERSION=“1.2.6” build_tools/make_version_h > version.h.tmp
if cmp -s version.h.tmp version.h ; then echo; else
mv version.h.tmp version.h ;
fi

rm -f version.h.tmp
/lib/modules/2.6.8-3-386/build
make -C /lib/modules/2.6.8-3-386/build SUBDIRS=/usr/src/asterisk/zaptel-1.2.6 modules
make[1]: Entering directory /usr/src/kernel-headers-2.6.8-3-386' make[1]: Makefile: No such file or directory make[1]: *** No rule to make targetMakefile’. Stop.
make[1]: Leaving directory `/usr/src/kernel-headers-2.6.8-3-386’
make: *** [linux26] Error 2

thanks in advance
Rohit

By the looks of things you do not have the headers for the version of the kernel you are attempting to build against. What directories do you have under /usr/src ?