Improve PS2 image quality on HD TV?

[MechaWumpa2]

Hello, I recently bought an 720p HD TV with AV video and I noticed that my Dreamcast's image displays fine and rather crystal unlike my PS2 which displays very blurry and stretched, anybody know why? PS2 games (ON PCSX2) display better on my monitor, is it because it runs through my GPU (DVI Cable) and my PS2's AV cables need an upscale-ing device?

 

[Dom_79]

Go into your PS2's setting and adjust the screen resolution (4:3 to 16:9) that should do it.