First off, it's -11 here today with a wind that could strip paint. If you're still interested, I described my move to Toronto in (some) detail here: http://www.p45rant.com/boards/showthread.php?s=&threadid=37200
As for cities, your best bets are Vancouver, Toronto or Montreal. There are some Ontario based jobs here: http://www.oaa.on.ca/client/oaa/OAAHome.nsf/web/Employment+Opportunities!OpenDocument
You probably won't get the same salary you would in Dublin, but the cost of living is lower and quality of life (a nebulous concept, but bear with me) is far higher. For an assistant architect without Canadian experience expect between $30 and $40k pa, depending on the office.