> And 48x48 is the largest windows programs have.
I think this is true for the programs I was looking at, however Wikipedia (http://en.wikipedia.org/wiki/ICO_(file_format)#Icon_size.2C_transparency_and_color_depths) says that Vista supports 256x256 icons. So if I could find an exe with a 256x256 icon, Wine should show it ("as-is")?