PS2 wont play DVD movies!
Hi. It seems that you might have an old version of the PS2.
The original PS2's had a problem with the laser that read CDs and DVDs, often failing, creating problems with reading DVDs and in rare cases, CDs.
Unfortunately, the class action lawsuit filed against Sony is too old to get yours fixed for free, but there are ways to attempt to fix the laser yourself, if you would rather not send it in to Sony.
If you have any other questions, respond and I'll help you the best I can.