hi pebri, don't worry too much, Actually i use Ubuntu 8.10 and i can make telnet and samba. Its very easy.
1. Download the zaurus module here in 2 parts, this is an precompiled kernel.
   1.- 
http://rapidshare.com/files/130817679/kernel.aa   2.- 
http://rapidshare.com/files/130849131/kernel.ab2. you have to join the two parts, with this, in your actually dir, were you have de kernel parts precompiled.   
cat kernel.a* > linux-image-2.6.24.3.170708_2.6.24.3.170708-10.00.Custom_i386.deb
3. install the precompiled kernel, like this:   
$ sudo dpkg -i linux-image-2.6.24.3.170708_2.6.24.3.170708-10.00.Custom_i386.deb
4. then when all is ok installed, reboot ubuntu.
5. Done! thats all the first part. zaurus module installed success.
6.  in telnet type this:   
$ sudomodprobe usbnet
   $ sudomodprobe cdc-acm
   $ sudo modprobe zaurus
7. Connect your phone to pc in USB net mode.
8. in your phone, run this script from file Manager:
9. now in your phone run the script from filemanager.   
https://motohell.com/index.php?action=dlattach;topic=3912.0;attach=303810. Then on terminal type this    
ifconfig usb0 192.168.16.1 broadcast 192.168.1.255 netmask 255.255.255.0 mtu 900
11. On terminal type this:   
telnet 192.168.16.2
Thats all.good luck, this guide works for me well. XD