What media to use to?

Hi, it depends on how much data (especially photos) you are planning to backup, look at the file size in your genealogy program by using My Computer and navigate to where the files are kept. As it states, the CD will hold 700mbt so I doubt your file is that big. The 12X just refers to the max speed it can be written to by your cd burner but it will sort that out itself. The 80 mins refers to the amount of music( standard CD tracks not mp3 coded) that it will hold.

If you want an easier solution, buy an external Hard Disc Drive that plugs into your USB port, this will hold more backups than you will ever need and it just looks like another Drive to your PC. You can just copy stuff across or use the Genealogy program backup facility to direct the backups to it. There is normally no installation it works as soon as you plug it in if you have a reasonably modern PC

I think u meant Over Write and not override

U can use practically Any disk as long it RW... Like CD-RW or DVD-RW

Rest of it doesn't really matter for your job

I'd Suggest using a DVD-RW though 'cos it would provide more space and a generally faster than CDs