You just downloaded the newest version of your favorite Linux distribution but you remembered the first time you did it you were in Windows where you had Nero (or some similar application) to help you burn the ISO image onto a CD or DVD. Now you're in Linux...what do you do? Simple. You turn to one of the best burning applications available - K3B.
K3B (KDE Burn Baby Burn) is a CD/DVD authoring software written for the KDE desktop that supports nearly every feature you have come to love with such tools. K3B takes this one step further by being free. And unlike many other similar tools, K3B can burn bootable ISO images so you can keep that free-install smell on your PC at all times.
Burning an ISO image with K3B is quite simple. The first step is to start the application. K3B is generally found in the Audio or Multimedia menu entry within the Start (or "K") menu. Once K3B is open you will want to either click on the Burn CD Image (or Burn DVD ISO Image) button or click on the Tools menu from the menu bar.
If you go the Tools menu route you will see an entries with the same title as the buttons ("Burn CD Image" and "Burn DVD ISO Image").
When you select to burn an image a new window will appear. In this new window you have to click directory button in the Image To Burn section and locate the ISO file you want to burn.
Once you have located the image K3B will run a checksum on the image to make sure it matches. When the checksum is finished, and you have inserted the proper medium in your drive, you can click the Start button to begin the burn process.
If you are unsure of your setup, or if you are low on burnable media, you can always select the Simulate button (under Settings) to simulate the burn process. If the process will run successfully you can then uncheck Simulate and run the process as normal.
K3B is one of the finest CD/DVD authoring applications available. And having the built-in ability to burn ISO images helps to stand above many other (more costly) alternatives.