trial version of Office 2013 - dont have a disc drive on my computer

Hello

I have just downloaded the trial version of Office Professional Plus 2013 but the download is a disc image file for burning a disc - my laptop doesn't have a disc drive so I can't burn it onto a disc - is there another way to download it? Or, can I download it onto another computer, burn the disc, then install on my computer? What kind of disc do I need?

Thanks