mrstattoo7

I am really new to this and had a few questions. I need to burn an iso file regarding the recovery of an operating system.I have 2 quesions. 1) should I use a cd-r or a dvd-r or doesnt it matter? 2) the file is 912MB and my cds only hold 700MB.Can I use multiple cds or will this error the burn and then the upload to repair computer? Thank you