Platforms can be disabled completely or can be enabled to show on registration page by going to: Admin -> Core Features -> Enable Advanced Profile Fields -> Features and Options -> Profile Fields.
Two options in the admin panel under: Admin -> Modification Settings -> Miscellaneous. So you can choose if you want the GamerIds to display in plain text or to change the default PlayStation Portable ID to the US version.
Installation This mod edits the following template files. So make sure to tick your custom themes when you install the package in the SMF package manager under "Install in Other Themes" (only themes with the following template files will show up so you may not need to do this).
Upgrade To upgrade from earlier versions. Uninstall the old version first then install the new one.