Just about to install my Canon iP4500 onto my new iMac, for the first time. Is it better to plug it in & then instal the software or instal software & then plug in? I never know wich to do first! I have the disc, its version M 1.0. it doesnt mension on the disc, weather thats mac/windows. Is it best to download the latest version? bit of a no brainer really I suppose!