You can double click each to install them in either the software center or gdebi, whatever your default is. However, I encourage you NOT to do this unless you have a specific reason for wanting this kernel. Canonical heavily patches their kernels to make it play nice with their system and you may wind up with a lack of drivers. You could compile your own kernel and manually add the Ubuntu patches and this would be a safer route. Kernel source is located at www.kernel.org.

For a guide on compiling your own kernel, visit https://help.ubuntu.com/community/Kernel/Compile as it is pretty in-depth.