Bogtruck,
Bring copies of any Airside passes you have, letters from the authorities who issued the security passes confirming you did have one.
Bring original utility bills with your last address on them.
Bring references from bank manager if you had a mortage and ref's from landlords if you rented.
Because you have a girl friend already here you will be able to live with her. Without a job you will not be easily able to rent an apartment or get references in Canada.
You will run into many brick walls for the first two years, after that you become numb and things run smoother.
I got there in '97. has its ups/downs but I'm still here for the moment.
Goodluck.