Installation is very easy once you've done it once or twice.
I'm going to use the default theme as an example.
Upload contents of folder (which contains your new buttons) via FTP to /images/buttons. If it asks you if you would like to overwrite, click "yes"
Now, if you have a custom style/theme, you will have to upload to the correct button folder for that particular theme you would like to show these new buttons.
IE: images/yourtheme/buttons
|