Instructions
Navigate to the "Settings" menu of your PS3's XMB (Cross-Media Bar), which is represented by a toolbox icon. Press "X."
Select "Display Settings," then "Video Output Settings."
Select "Component," "Composite" or "SCART," depending on the type of connection you use to display the PS3 on your television.
Select "480i" for standard-definition NTSC display, or "576i" for PAL display. Select "Change" to confirm the setting.
Highlight "Standard," and press "X." If your television supports progressive-scan output (this will be specified in the set's manual or on the back of the set), select "480p" or "576p" by highlighting the settings and pressing "X." Choose "Widescreen" or "4:3," depending on whether you own a widescreen television (most standard-definition sets are 4:3). Press "X" twice to save your settings.