Space on index page

[ABLT Supplies]

How do I go about adding a space between the "Who's online" box on the right and the footer?

[khopek]

#whosonline {margin-bottom: 10px;}

Change the part in red to whatever you want.

[LissaE]

khopek gave you a good idea, however if you decide to change your sideboxes around you will lose that space, it might be better to find this section in your stylesheet:

#navColumnOneWrapper, #navColumnTwoWrapper {
    margin-left: 0.5em;
    margin-right: 0.5em;
    } 

and add in margin-bottom: 0.5em; and change the values to suit your needs :)