Hi, Just to followup to the suggestion of implementing modules which others could use to implement OSes... We've implemented a uKernel named Off using the Flux OS toolkit. Perhaps you could give your ideas quickly a try using this OSKit. At least, it's do the job for us. See http://www.gsyc.inf.uc3m.es/~nemo/off for information about Off and pointers to the OSKit. HTH -Nemo.