When you need to build a module you will find out that the linux-headers for the voyage kernel is not available.\\ 
Don't worry there is still a way to build your module.\\ 
**NOTE I'M WRITING THIS ASUMING YOU ARE USING KERNEL 2.6.23-486-VOYAGE**

first make sure you're on R/W mode if not run:
  remountrw

You'll need to edit your sources.list at : /etc/apt/sources.list \\ add the following line to it:
  deb http://www.voyage.hk/dists/experimental ./

once you are done you'll need to type in the following:
  apt-get install build-essential
  apt-get install linux-source-2.6.23-voyage

once both of them are installed go to:
  /usr/src/

There you'll see that a packed file un pack this file e.g.
  tar -zxf linux-source-2.6.23-voyage.tar.gz

once unpacked there will be a folder called ///usr/src/linux-source-2.6.23-voyage// \\ 
Enter this folder and edit the //Makefile// \\
Look for 
  EXTRAVERSION =
and change it to
  EXTRAVERSION = -486-voyage

now you'll need to copy the config file to the //linux-source// folder using:
  cp /boot/config-2.6.23-486-voyage /usr/src/linux-source-2.6.23-voyage/.config
after that run
  make

Probably you'll want to go to bed or do something right now because this can take hours :).

once it is FINALLY DONE you'll need to make a symbol link with this command:
  ln -s /usr/src/linux-source-2.6.23-voyage /lib/modules/2.6.23-486-voyage/build

There you go now you can build your module!