Seeing as I did work this out on my own, also, I plan to make a utility on XFX3d to build a web based converter -- which will convert from a shitload of image formats, allow you to upload an alpha mask image in case the type of file you upload doesn't have alpha channels (JPEG for instance), and not give a damn about how wide the file is (by converting it to 91x91 for you). Any error messages will be in English, 'cause it's what I speak.

I'm the asshole. You wanna be a shit? You gotta go through ME.