I hate paint.
I'm not saying that paint is the best program in the world, but if you learn to use it properly, you can do some decent work with it. I'm assuming you hate the huge size of your image, which was then resized by imageshack into something unviewable - correct?
If so, here's what you do - use the scroll bars to the right of and below your image to scroll to the bottom right. Be sure that no selection is currently active (i.e. copy/paste tools), and there should be a little black box in the corner of the image that changes your mouse cursor when you roll over it (likely to a diagonal, double-arrow). If you click on that and hold it, you can drag your image's borders around, making it larger or smaller. Play with that a bit, and you can eliminate all that nasty white space on the image, and imageshack won't make it nearly as small.
(You can accomplish the same basic thing by clicking "Image" on the menu bar, then clicking "Attributes". This brings up a small window where you can specify the width and height of your image. Play with those numbers to crop the image.)