steeley737,
You can only get a "escort Required pass". Unless the rules have changed again. When I came here in '98 Iwas on an escort required pass until I got my pernament status, then I got a full airside pass after that.
Make sure you have copies of your old UK passes and a letter from the authority that issued the uk pass. keep records of your previous home addresses and copies of your old power bills, cable, phone, etc. this serves as evidence that you were infact there.
Your head will get sore from bashing it against the brick wall every single day for every single situation you will encounter here in Canada.
Yes its does get numb and the pain will be less!!