what is the mif file and how it is used in the application?

hi everybody,

i want to know that what is the mif file and how it is used in the application to display the
application's icon?
is any tutorial related to this?
if possible please send me a sample application with code using mif file....

so that i could be able to use its methods...

please help..

Thanks in advance...

Brajesh Kumar...