Lines on screen?

[smiley9916]

Dolphin runs quickly and smoothly, but theres one problem: I only have one game, LoZ: Wind Waker, and everytime I try to play it- there are weird lines...Here is the picture of it: this is just the loading screen, but the same problem occurs when I play it.

Thanks.

http://www.gametabs.net/files/user/smiley/Untitled.jpeg : pic
http://www.gametabs.net/files/user/smiley/GZLE01-1_0.png : better quality, more close up