tips for getting that Investment Banking interview

The recruiting season for Investment Banking summer internships for 2011 is coming up here in Canada. Applications are due Sept 14. I'm trying to land an internship at one of the Big 5 banks.

Here's some details about me:
starting 4th year student
Bachelors of Business Admin - Accounting Honours
3.35 GPA (will get it up some more easy)
co-op experience at the CRA (Canada Revenue) within Finance as a Financial Analyst
some other random volunteering for Vancouver 2010 Olympics and other office experience

What do you think my chances are to get an interview for the Investment Banking Analyst position? I would really appreciate any tips for my cover letter and resume to land that all important interview... i will also be attending the networking sessions when they are scheduled.