nixCraft

hi
could anyone guide me how to install the cisco vpn client on my debian system,

i downloaded the file: Cisco_VPN_Client_v4.8.01.0640_Linux.x86_64.rar

and unzip it,

this is what i did,
==============

kunetdeb02:/home/joe/vpnclient# ls
0DayCar.html Cisco_VPN_Client_v4.8.01.0640_Linux.x86_64.rar vpnclient
0DayCar.jpg setup.tar.gz zwt.nfo
kunetdeb02:/home/joe/vpnclient# cd vpnclient/
kunetdeb02:/home/joe/vpnclient/vpnclient# ls
cisco_cert_mgr IPSecDrvOSFunctions.h linuxcniapi.c vpnapi.h
Cniapi.h IPSecDrvOS_linux.c linuxcniapi.h vpnclient
config.h IPSecDrvOS_linux.h linuxkernelapi.c vpnclient.ini
cvpnd ipseclog linux_os.h vpnclient_init
driver_build.sh libdriver64.so Makefile vpn_install
frag.c libdriver.so mtu.h vpn_ioctl_linux.h
frag.h libvpnapi.so sample.pcf vpn_uninstall
GenDefs.h license.rtf unixcniapi.h
interceptor.c license.txt unixkernelapi.h
kunetdeb02:/home/joe/vpnclient/vpnclient#
kunetdeb02:/home/joe/vpnclient/vpnclient# ./vpn_install
Cisco Systems VPN Client Version 4.8.01 (0640) Linux Installer
Copyright (C) 1998-2006 Cisco Systems, Inc. All Rights Reserved.

By installing this product you agree that you have read the
license.txt file (The VPN Client license) and will comply with
its terms.


Directory where binaries will be installed [/usr/local/bin]

Automatically start the VPN service at boot time [yes]

In order to build the VPN kernel module, you must have the
kernel headers for the version of the kernel you are running.

For RedHat 6.x users these files are installed in /usr/src/linux by default
For RedHat 7.x users these files are installed in /usr/src/linux-2.4 by default
For Suse 7.3 users these files are installed in /usr/src/linux-2.4.10.SuSE by default

Directory containing linux kernel source code []

* Binaries will be installed in "/usr/local/bin".
* Modules will be installed in "/lib/modules/2.6.18-6-686/CiscoVPN".
* The VPN service will be started AUTOMATICALLY at boot time.
* Kernel source from "" will be used to build the module.

Is the above correct [y]

Making module
./driver_build.sh
Cisco Systems VPN Client Version BUILDVER_STRING
Copyright (C) 1998-2001 Cisco Systems, Inc. All Rights Reserved.

usage:
./driver_build.sh 'kernel_src_dir'

'kernel_src_dir' is the directory containing the linux kernel sour
ce

Failed to make module "cisco_ipsec.ko".
kunetdeb02:/home/joe/vpnclient/vpnclient#

==============

pls help
chears
joe