Getting there... I didn't have the field and label in the same column selected, but I adjusted the field width to 600 and now the check box and text look right together. However, I can't get that field to align to the right of the form. It looks as though there is an empty column before the field for the label so it's kicking the field off to the right:
http://screencast.com/t/BTQEsqT6ua3o I tried changing the colspan, but this didn't work.