6
Take a note of the background image's dimensions and upload it to the image manager.
In the 'new block' setup screen, add a DIV to the block similar to the one below. If the BG image is to be static, the DIV needs to be the same height and width as the image. If you want a tiled BG, change the 'repeat' statement accordingly.
Open the image manager, right-click the image, select 'properties' and take a note of it's filename (it will be different from the filename you gave it).
Use the filename as the background image SRC.
<div style="width: 140px; height: 140px; background: url('{X_SITEURL}uploads/img455f18730d6f4.jpg') no-repeat top left">Block text goes herediv>
HTH
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