[newbie] .iso file?

[William Neuman]

Hello,

I have ftp'd the file mandrake61-1.iso file. I burned this file using Nero
Burning Rom using the ISO section. I now have a CDrom with one file on it;
mandrake61-1.iso. My question is now what do I do? How is this file read?
When the file was burned to the CD I fiqured it would of been opened up to
many files. Do I have a coaster here?
Thanks,

Bill