[help]creating A Transparent Bmp

Hi.

i want to know how you guys make a transparent BMP file in shell32.dll

i tried to do it myself, but it didnt work probably(i could see the white color around the toolbar icon), see the pic below...

http://home.pchome.com.tw/boy/alexmak/help.jpeg

what i did was cut and resized Goku's toolbar skin(sorry for not asking permission) in photoshop, then i saved as .bmp file. Then i used PE Explorer to do the replacement(another question, when i tried to use Reshacker to do the replacement, it appear error). After i replace the shell32.dll and reboot, it still doesn't work, i could still see the "white" color aroundthe icon. I also tried to save as PNG format then convert it to BMP format, but it also doesn't work.

So what software should i use?

Or any tutorial is about creating a transparent BMP?

Or did do the replacement Wrong?

here is mine bmp file(it's not working)

http://home.pchome.com.tw/boy/alexmak/205.bmp

here is Park's bmp file(it is working)

http://home.pchome.com.tw/boy/alexmak/205_2.bmp

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