Unfortunately you can't claim copyright on that since I created it and you're actually still linking it from my Photobucket -account...
Anyways, if you're trying to remove a background from a merged layer (for instance a PNG which then appears with white/black background in PS), one way is to use Select -> Color Range and then remove the background manually. If you have the background and the text (like the image you gave) seperately, just remove the background layer via the Layers -palette. (if locked, double click to unlock).