Hey N2V.
Here is the link to unlocking the phone. Read through everything there and that should get you started.
http://forum.ppcgeeks.com/showthread.php?t=36062
Unless your planning on moving to the states your carrier options are going to be limited to Bell, Telus or a provincial provider that is CDMA.
Here is a link about switching from Telus to a provincial provider. It has some links in it to other resources for you to read through.
http://forum.ppcgeeks.com/showthread...carrier+switch