Jeff said:
In cd burner XP what is meant by an ISO?
CDBurnerXP is a CD burning program.
http://en.wikipedia.org/wiki/Cdburnerxp
Using a CD/DVD burner or similar, plus the program,
you can convert a downloaded ISO9660 file,
into a bootable CD.
An ISO9660 is a way of taking an image of a CD contents.
http://en.wikipedia.org/wiki/Iso9660
"El Torito enables CDs to be bootable on PCs."
You do not drag and drop an ISO9660 onto a CD,
but instead, use a burner program to properly
translate it and install the resulting file system
onto the CD (so multiple files from the CD are
evident afterwards in File Explorer).
HTH,
Paul