affidavit of support

i am trying to obtain f-1 status to study in the us and i am not exactley sure what i am suppose to do with the affidavit now that i have all the information needed. (bank statement ect.) i had heard i would have to make an appointment in calgary to see a officer to get the affidavit signed. i had also read somewhere that i would be able to fax all my information to there office and have an officer sign and send it back. any one?

All the info is on http://www.amcits.com/calgary.asp