Question about my PS3 playing DVD's

[GoosePants]

My PS3 has an upscaler on it, and I have a question about Aspect Ratio. My TV is a 32" 720p Toshiba HD LCD TV. Ok, I have my picture size set to "Native", which shows more picture than "Natural" setting. I put in some dvd's, while it was on native, but it was showing a white line on the left hand edge. I put it back to natural which was crooping the edges of the image. I have my upscaler set to full. I think my TV is 16:9. Now, I want to purchase some dvd's that say this

Aspect Ratio: Anamorphic Widescreen - 1.78
Aspect Ratio: Full Frame - 1.33

Will I be able to watch them in the Native resolution and see all of my picture, but not have that white line? Is there a way to get rid of that white line on my DVD's but have all of the picture, filling up my screen? Any help is greatly appreciated, thanks!