the Xeno GC looks insanely easy to install. In fact if you're looking to get into modding, it may be a good one to start with yourself.
+1
i do recommend if your going to use a XenoGC do as i did and do a Wired install and not directly onto the Drive Board.
below is a pic of the XenoGC and Drive Board

also you need a few things to do the install...........
-Soldering Iron
-Solder
-Kynar Wire ( if doing a Wired install )
-desolder braid
i read once someone saying similar to........... to learn basic soldering use a broken item such as a broken Controller etc....... and solder wires here and there to gain some basic skills.