Originally Posted by briantoronto

You should be able to check your luggage all the way through from YYZ. You will clear US Customs & Immigration as well in YYZ, so you can make your way strait away to the gate.

T2 (Air Canada) and T1 (Continental / United) are connected airside. You will arrive at E1-E2 and depart from B1-B4, so not much of a walk as you can see from this map.

The RCC near B6-B7 is the best of the lot, and has a CO representative.

Brian