Show Waiting Sign Until data Loaded in Silverlight

Question

Hi All,

I have a Silverlight Application where after the Page is loaded its taking a bit time like 2 or 3 seconds to load the data into the Page.What i wanted to do is until the data is loaded into the page i want to show the waiting sign...
Did anyone faced this problem before???
Can anyone help on this please!!!!

Thanks,
Prasant