My new printer canon pixma mx882 will not install on my Mac OS x 10.4.11. Finally a message saying I need 10.6. I am not computer friendly and have totally assembled my new printer and now my mac will not let it finish loading the software. Is it goiing to cost me $$ for the new upgrade? and will I have to reload other programs I already have?? Again I am a senior and am not too computer knowledgeable. Thank you for any help.