Using a 256 x 256 Windows Vista icon in an application

Question

I have an application which I have made a 256 x 256 Windows Vista icon for.

I was wondering how I would be able to use a 256x256 PNG file in the ico file used a

Answer 1

None of the above answers handle Vista Icons - only small (32x32) and large (48x48)

There is a library that handles Vista Icons here

...it looks quite complicated due to the dual-png alpha channel format.

I will try to make a concise answer in vb .net but it may take some time.