svBuilder and svBuilder-Pro both have the same ability to order images.
On the 'Images' tab, you can go to 'Images -> Sort' (from the drop-down menu at the top) and select 'By File Name', 'By File Date' or 'Reverse'.
In addition, you can drag and drop thumbnails into a new order on the 'Images' tab.
You can also Ctrl+Click a selection of images or Shift+Click a block of images before dragging. (This will work fine even though the selection will not be highlighted.)
Also, once the gallery has been created, you could edit the gallery's 'gallery.xml' file in a plain text editor and change the order of the <image> entries.
SimpleViewer Support Team