Dual display problem

i have a old 2007 Mac Pro, have it connected to a cinema 19" display, i connected also to a 32" samsung lcdhd tv. problem is the only way to get anything onto it is to drag it off the cinema display then it shows up on the samsung, ok i went to display and mirrored them, well now they both have the same pages but the 19" cinema has huge black bars on all four sides. ive searched the internet trying ti find out why this is happening, it only puts the black bars when i mirror both screens.

Which graphics card do you have installed in the Pro? Also, I'm assuming it has a dual output unless you're using two graphic cards?

i have four NVIDIA GeForce 7300 GT cards. PCIe Lane Width: x4 on two and x8 on two.

well figured it out, my monitor is 1680 X 1050 and my hdtv that i was using is 720p. if i connect it to my 1080p tv its fine.

OK, that makes sense. Thanks for posting back.