It looks strange for me, why you have got the landing letter from Vegreville. I have never read about similar cases before.murphy said:mohammed.....the letter that i recieved was from vegreville directly, that my interview will be on sept 3,i sent my aplication july 26,2010.....
Like Mohammed, I got my landing letter from local office (Etobicoke), not from Vegreville.
Usually CIC sent several letters informing you about Approval in Principle (first stage approval) and finalizing the application (second stage approval).
The second letter must include you local office, where you finalized documents have been transferred for the landing interview.
After that, the local office defines the date and the time of your landing appointment and informs you about this by call and by letter.
In my case yesterday I received landing letter from Etobicoke.