ImageList transparancy

With VB.Net,
I have an imagelist object filled with .ico files. My toolbar refer to that imagelist to get to images. I found that the toolbar's images which come from imagelist cannot fully support transparancy of 3D icon (doesn't look smooth at corner of image in toolbar). But when i choose the toolbar's icon property directly to .ico file, the image which displayed in toolbar look smooth.
I wonder is there anyway to solve that? Or any IconList control, maybe?

[484 byte] By [aping] at [2007-12-16]