Well, I guess this is a way to start my morning ^^
As previously stated by our helpful members here in LQ, ISO files are CD Image files. In other words, you can just burn it straight to a CD or DVD without having to extract it. I assume this is what you want to accomplish since you want to have a Linux installation CD/DVD.
The easiest way, is to use this software called ISO Burner. It's a freeware, so give it a download on this page:
On the right hand side there you can download in zip, exe or setup exe. Since the program doesn't really need to be installed to run (it's just one .exe file) then I recommend you download the zip or exe file, not the setup.
Extract it somewhere and run it. Then navigate to your ISO file, put your CD/DVD in (depending on which version you downloaded), press BURN and VOILA!
I hope that helps ^^