1.0 link Rainbow Dash Network http://rainbowdash.net/ Jon and Angela Conrad (fnordly) http://rainbowdash.net/fnordly http://rainbowdash.net/notice/419252 @<span class="vcard"><a href="http://rainbowdash.net/user/250" class="url" title="&#x2605;"><span class="fn nickname">starshine</span></a></span> Have you ever hacked at a device driver module for Linux? It is actually kind of fun, because everyone that has ever written one has just followed a skeleton structure of a preexisting module. They are all alike and all different and all varying sizes and amounts of complexity and simplicity at the same time. In other words: the source for the device driver is likely to be the most straight-forward part of your kernel for you to just jump into and experiment with... Unless you don't compile the kernel yourself. In that case, I don't know if this would help.