Not sure where to post this thread, so this is as good a place as any.
Want to revive the squad logo from my old squad.  The original logo had Muttley squared off at the bottom, so did a hack and slash in MSPaint to give it a curve at the bottom:

What I want is to use this as the logo, but without any of the white border and possibly smoothing the jagged bottom edge a little.  Could one of the graphics wizards here please change the white to clear?  Your handiwork will be most assuredly be featured in upcoming screenshots.