Image transperency

Hi all,

I hope someone can help me with this.

I have made transperent gif images using photoshop hoping that when i use them in windows forms picturebox the background won't be visible but they blend with the different backgrounds but still there is a rectangular background around the picture with the same color of the picturebox background. why is this happenning?Is there a way we can solve this?

And when i overlap two images i want them to be seem through so that the picture beneath should be visible.

Thank you all
Sai

I think you have to write the code yourself instead using a picture box, or a simple solution is to fill the transparent parts with the color of dialog, but if another user uses a different Windows theme or different colors there's a problem. Anyway I do not remember actually if the picture box have the transparent option...