Place either of these background codes in announcement area.
This is the code to change or put a new background picture on your league page. Simply replace where it says site_goes_here.gif with the url of the picture you want on your page.
This code will change your current background to a certain html color. Simply pick out a color and place it in the code.
This code will make your background image fixed to so when you scroll your background image does not move.