I upload them to ImageShack fine but when I make something transparent it won't show. This is the image I want as my avatar:

I made it transparent inside GIMP and then in aviary, nothing. I tried it aging and it didn't even show but they do when I look inside the main folder on my computer. I thought the file name might be wrong and when I go into MS Paint
it says save file as "24-bit Bitmap"? I've never even heard of it and almost all of my pictures I've ever done inside Paint are that file format. I've tried it on a totally different image and that didn't show either.
I'll try it on a image of this screen right now. Result: didn't even show on image shack.
Please if you you have any idea tell me! I'm lost and I need the images to able to work.

