WinForms and WinXP taskbar grouping

[Wes]

I am writing a windows forms application in C#. When the application is has
several instances running concurrently XP will normally group them (if the
option is turned on). The grouped applications taskbar button is then
labeled as (# Application Name) where # is the number of instances; however,
in my application when the instances are grouped together the taskbar button
is labeled as (#) and does not include the application name. How can I
affect the taskbar grouping button application name?

I set the application name using Text property of the Form class. My
application's name is normally in the form of 'My Editor', but when a
document is loaded it becomes 'My Editor - Document'; however, it is not an
MDI application. So it might be important to note that sometimes different
instances will have slightly different names. I did repro this effect even
when the instances all had the name of 'My Editor'.

Thanks for the help,
Wes