Applying for a study permit from the USA. (Russian citiznship)

[pip]

Hello forum.
Im currently going to college in Boston, MA, USA and finishing up my studies this semester because of the high cost of education... My I-20 says that the usual period of studying  is 2 years and it expires on November 1 this year. So i decided to apply for a study permit to Canada cose its considered the cheapest county to study at. 
I applied for a 2 month Diploma in Business Communication program because missed deadlines for the college and the program i am interested in. And right now im at the position there i have 2 years of studying in the USA and going to study for 2 months in Canada, but having on my mind that i`ll go to study french after this diploma program ends, than spending a summer and going to start school in September. (I have a letter from the college im interested in on me saying that i applied for **** 4 year program and its in a process)
IM going to the embassy this thursday.. Any suggestions for my situation and what am i suppose to say to the officer? 
Im in the USA for 3 years and do not really know what officer is going to say about this..

Also, on my student status here i have no expiration date (Valid for the duration of status). What am i suppose to write into the application form there it says your  present status and when it expires?

[haignr]

Hi pip,
I'm in almost the same situation. I want to apply for canada study permit from USA...can you pls share your experience.