Install Debian 3.1r5

1. Download the 1st ISO CD;
2. Install the base system;
3. Install the x-window-system;
4. Configure mouse: /dev/psaux;
5. Install libx11-dev;
6. Install ncftp, firefox, ...;
7. To download something, use wget;
8. To install other packages, use aptitude;
9. ...