Hi, I have a power mac G4 with Mac OSX 10.5. I went to open system preferences and it shows up in the tool bar as being there but you can't see it. What can I do to find it and make it visible? Also all of my word applications no longer work, entourage,excel, and so on....I do not have the app disc nor the app disk number. What do I need to do to get them working again?