puh... OK, here we go:
Put in a DVD, then start it by pushing reset (the green/red button on your PS2) or click on the DVD simbol at the PS2s Browser.
The DVD will start... now playback the movie... if it runs, press the stop button on your joypad (was it square...? To lazy to test right now). Then highlight the menue by pressing SELECT !!!
Now you´ll see a menue - highlight the screensettings and change it from 4/3 to 16/9... push select again and then play...
If that doesn´t help... READ THE DAMN MANUAL... :clown:

(If you want to buy a new manual, then contact SONY... they´ll help !)