C# windows application - No application and no title when choose group similar taskbars buttons in Windows XP

Hi:

When choosing "group similar taskbar buttons" in windows XP, the group of my C# application windows doesn't have a title or the icon on the taskbar.

I have searched around and some people suggest that there must be something to do with the AssemblyInfo.cs file in my application for the title and icon to be displayed on taskbar when use group similar taskbar buttons...Some other people say it has something to do with Windows XP regedit configuration or windows service pack....But I haven't found a correct answer of how to make this work.

My computer's running Windows XP professional with service pack 3..

Thanks,

Rocco