by Yun Xu.
Hi Stefan,
For fresh installation:
1. Extract your Moodle package under your wwwroot directory
2. Setup a new database using phpmyadmin, don't forget to check the database hostname, database name and password;
3. enter "yours.domain/moodle/install.php" within a web browser
4. You should know the rest.
Hope it can remind you somthing you have installed Moodle 1.9 before.