Resizing Screen Grabs.....chewy text

I have a client who provided me with screen shots of a module that need to be resized to 590 pixels in width to fit into a flash tutorial. The original images are 1024x768.

When I resize it, no matter what size I resize to, the text get’s blurry. Is anybody able to shrink this image to anywhere from 590 pixels to 610 pixels in width and have it look good? I tried to sharpen the image… Anybody have a suggestion?

I have the full size image here:

http://hallmedia.com/scrnshot3.jpg

Thanks!