[SOLVED] How to install kernel source

[captainquint]

Kernel sources need to be installed to install an old modem driver(which worked last week with SuSE 10). Debian 4.0 re-installed today with no desktop, and I used dpkg --install to install gpm, gettext, intltools-debian, binutils, po-debconf, gcc-4.1(and it's dependencies).
I tried dpkg --install kernel-packages_10.1067_all.i386.deb, but depkg-dev was an unfound dependency, and couldn't find it in /media/cdrom0/pool/main/d, so I quit for the night. The backup system I'm building has no desktop, no GUI, and only an old modem that will work if I can add the kernel sources.
Is there an easier way than the dpkg --install, one package at a time?

[GNU-Fan]

Hello,

apt-get build-dep packagename

installs every dependency, whereas

apt-get source packagename

installs the sourcecode of the package itself.

[captainquint]

Thanks, apt-get install worked very well to install the kernel source, kernel headers, kde, and xorg.