Thanks for the help Jeff, it works great.
Still wish there was some way to re-map the "My Videos" button, though. I tried setting HotkeyP to the keyboard shortcut for "Go to My Videos," but apparently the buttons on the remote don't exactly match up with the keyboard shortcuts (i.e. if I set Ctrl+E to go to My Movies, then pressing those keys does go there instead of to My Videos, but the My Videos button on the remote still won't).