The best .ISO burning software is ImgBurn and it's free. It will also Booktype for those who wish to tell their DVD players that their DVD+r's are DVD-Rom's. You can send the file as an .ISO but then why not just zip it and send it. Doesn't make sense really, and DVD's have regional differences.
SD cards also come as regular SD cards (without the micro part) and then have really come down in price.
The Official ImgBurn Website