Robocop

Hi. I've got a Sony Bravia HD TV and a Toshiba HD DVD player. I never noticed this before (or maybe it just started happening?) but when i watch a DVD, the left side of the image is cut off by a few inches, as though the DVD image coming in is too big for my TV display area, and so it's cutting off the left side of the image. This does NOT happen when i'm just watching T.V.

I tried adjusting the T.V.'s picture settings (wide, full, etc.) to no avail. One of the DVDs was wide screen; the other 2 did not indicate 'wide' or 'regular.'

What can i do to fix this problem??

Thank you!