Hi,
I had the same issue - it is skin related. Notice in your screenshot how the text under *SQL Parameters* is cut off on the right?
The way I got around it (and I'm only using a test server at this stage so it wasn't a problem) was to change my skin from a 1024 fixed width skin to a wider one (either 1280 or bigger, can't remember).
Hope that helps.
Patto.