I've an old iBook G4 800Mhz system currently with 256MB of RAM. I've no idea how much RAM will i be able to fit in. Anyone with that system or have any knowledge on this, help me figure out how much more RAM i can put in? I think the maximum I can put in is 640MB (Not sure...) but I'd want to put 1GB of RAM in it but is this do-able? Any recomendations of any place I can search for cheap RAMs? I live in the UK so any recomendations on anywhere I can search online and what type of RAM / brands should I be looking for that are compatitable? Thanks in advance.