Using multilingual variables for mysite

First things first:

- Drupal: 5.7
- MySQL database: 5.0.67
- PHP: 5.2.6-0.dotdeb.1
- Mysite: 5.x-3.3

I'm using internationalization module (i18n) for creating multilingual sites. This module uses multilingual variables to create e.g. multilingual site information. For documentation, see:
- http://drupal.org/node/134002

I would like to create multilingual variables for mysite page information like:
- MySite Sitename
- Personal Page Title
- Et cetera

Does anyone know how to create these (or: how to find out the names of used variables)?