Question about the ps2 s-video cable ?

May be...

do i need to plug in the yellow cable if i want pictures when i play my ps2

can i just connect the svideo, red, and white cable to play my ps2 with picture and sounds

sorry for the bad english

You need to connect the red and white cables regardless. These are the audio connections. If you use S-Video, you don't need the yellow cable and vice versa. The S-Video has a better quality over the yellow composite cable.

yeah he's right, you need all three for better quality.

by the way - what do you mean 'bad english'? are you foreign?