my friend as a imac, now i dont have a clue about them never used 1 just been looking around it. he wants me to format it for him, i dont know how to so any pointers where to start on the forum. and can some1 tell how i find the spec, i dont even know the size of the screen, or is there a serial number anywhere. plus he cannot remember is password. it started of for his son for home work so of he goes and gets this canon pixma 2450 printer, gave it me to install the drivers for the printer, he said it only get put on once a month any help please.