The CD is pretty cheap - only $28 from Compuquick. If you're doing your windows port commercially, you can get that from petty cash. In any case, there's such a huge amount of information there, so the CD is pretty good value. Parts of it are obsolete (like the early AmigaMail archives), but there are many important things that have not changed that much, eg dos.library, the devices and most of exec. I'm curious to see what resource.library and graphics.library will look like on OS4, since those two are pretty hardware dependent (no more copper-lists :-( )