Had to use the Custom feature in Prish Resizer and I just typed 450 in the space and it worked. Therefore I now know to use this Custom feature for all my future pics in this website! Yahoo! Now I can post my pics in the proper place.
I just noticed the difference between the 2 pics - I think I like the one I first tested in this thread where it was resized from 600x800. Oh well! I will learn what this site wants.