Here is your picture resized to 600 X 450, 600 pixels wide is the perfect size for posting in forums, larger will be difficult for those using dial-up and will distort the thread. I noticed you used the thumbnail script furnished by Imageshack. They provide you with the required tags for posting and usually that's all you need. I always use the direct link and provide the tags needed.
here is the script for the below picture, I added the stars (*) in the tags, remove the stars and this script will place your pic in the center of a post.
[*center][*img]http://img63.imageshack.us/img63/1623/wedj1kp2ai.jpg[*/img][*/center]
