UNetbootin allows you to create bootable Live USB drives for a variety of Linux distributions from Windows or Linux, without requiring you to burn a CD. You can either let it download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file if you've already downloaded one or your preferred distribution isn't on the list.
Mount ISO Image is an advanced script which allows to perform multiple operations with ISO, NRG (Nero Burning ROM), UDF (DVD), CUE/BIN, CCD/IMG/SUB (CloneCD), XDVDFS (XBOX) images.
Mount/unmount operations can be performed in two different ways: using kdesu or sudo. During the installation you'll be offered to choose a variant to use.