Values you can change in the Product Listing option of the configuration menu
1.  Display Product Image (0=disable; 1=enable)
2.  Display Product Manufacturer Name (0=disable; 1=enable)
3.  Display Product Model (0=disable; 1=enable)
4.  Display Product Name (0=disable; 1=enable)
5.  Display Product Price (Leave at 2)
6.  Display Product Quantity (0=disable; 1=enable)
7.  Display Product Weight (0=disable; 1=enable)
8.  Display Buy Now column (0=disable; 1=enable)
9.  Display Category/Manufacturer Filter (0=disable; 1=enable)
10.Location of Prev/Next Navigation Bar (1-top, 2-bottom, 3-both)

How To Change A Value
1.  Click on the name of the field you wish to edit.  It will change colors letting you know its selected.
2.  Click on the "Edit" button on the right side (see Figure-1)
3.  Make your changes
4.  Click on the "Update" button to save your changes (see Figure-2)

Figure-1 Click to enlarge

Figure-2 Click to enlarge