1. Use a USB stick, or FTP to transfer the file to your HDD. I recommend in the ROOT.
2. Open Launch.ini on Dashlaunch or desktop
3. Dashlaunch: Choose a plugin that is free, find your Notify.xex in the root of your hard drive (or wherever else you decide to put it) use that as that plugin.
3.5. Desktop: Edit one of the plugins as "Notify.xex" and make sure the path to the xex is correct or it will not work.
4. Reboot! Than enjoy Rainbow!