If you have downloaded the proper NewIcons package from AmiNet, all you need to do is run the installer in the folder. Though for the installation you will need the latest version of "Installer" (on AmiNet too).
If the icons still don't display then there is nothing you can do other than installing OS3.5 as there is no way of seeing GlowIcons on any OS below that (you must have downloaded a pack of icons, not a program).
