LinuxQuestions.org - can't install Internal PCI Modem but I have the drivers for Linux

Hello:

I had a modem but It woulnd't work with Linux. I bought one that said: Special for Linux and installed it. It's working perfectly with Windows.

It had three files for Linux. An rpm, a source rpm and a source tar.

I did the rmp thing and after installing it says I have to write at console:

hsfconfig.

I do that and this is what I've got:

Linux HSF softmodem drivers, version 4.06.06.02

No pre-built HSF modules are available for your exact kernel:
Linux-2.4.22-10mdk-i686-Mandrake-9.2-MODVERS

Assuming that a C compiler and proper kernel header files are present
on your system, we will now attempt to re-compile the modules.

Where is the directory of C header files that match your running kernel?
[/usr/src/linux]

WARNING: missing file /usr/src/linux/include/linux/autoconf.h
The cause of this problem is usually a missing or misconfigured
kernel source tree (and sometimes an incorrect directory or symbolic link).

First, ensure that the proper kernel source and compiler packages
from your distribution vendor and/or the community are installed.

The Linux kernel can then be reconfigured by running "make menuconfig"
under the kernel source directory (usually /usr/src/linux).

Verify that the proper options for your system are selected,
and that CONFIG_SMP ("Symmetric multi-processing support" under
"Processor type and features") is disabled, as this driver is
presently designed to work on single-processor machines.

Then compile and install your new kernel (for more information about
this procedure, see the README file under the kernel source directory),
reboot the system using the new kernel, and re-run "hsfconfig".

I'm using Mandrake 9,2 and I installed EVERYTHING hehe even things I know I won't use. What happened?

Thanks