I found what should be the solution to this, but it's not yet solved. The solution appears to be this set of directions in the help files:
Formatting your Dreamweaver page
After inserting your iRite textarea you may need to make some final modifications to how content is displayed on your page.
1.Select the WADADataTable table.
2.Enter 100% for the table’s width.
3.Click and drag from the Long Description cell to the cell containing your iRite textarea to select both cells.
4.Click on the Merge icon in the Properties Inspector.
5.Then click the Align Left button to align the Header label for Long Description to the left.
Any help, most appreciated.
I've attached a screen shot.