If possible I need it 600 x 112 and have the right edge be a gradient the color on the right side of the banner, which is doesn't have to be the exact same blue but something close.
Long story, but the banner is two images, the one on the left with the design, and then a solid color on the right which is the background for the login/search area. If you have a smaller monitor the login module is a little over 600 pixels to the right of the left edge of the banner, which is why the left/main part is only 600 wide.
I am not married to the 112px height but if you can get it somewhere close to that great. I think yours is going to end up a little taller which I think will be okay. Let me know if I didn't explain any of that very well.