Originally Posted by
hhyndman
Can someone tell me how it works? If I have an J class ticket (paid the J class points), but one segment is in Y, I can request an upgrade at the gate, but where would I fall on the list? At the bottom? I do not have status.....

I am assuming that you are on an Aeroplan ticket? If that is the case then you will be dead last in the upgrade priority.
What you can do though is keep an eye on that route to see if an award spot opens up on that leg. If it does you can call Aeroplan and ask them to bump you into J (without being charged a fee either though some agents may try to ding you).
Best of luck.