Canada kicks ass. I'm sorry I don't know a way to do what you're trying to do. It really sucks how they locked down the Milestone in Canada. It's even more locked down than the European one
Here's a
video that might make you smile... or cry.
Oh yeah, if there's a way to install the google voice app, you can get a work around for it with a US Number.
-get a magic jack for like 50 bucks and set it up with an auto forwarder to your Telus line. Have your google voice number set to go to the Magic jack number. Oh yeah, you can get an alberta 403 area code for google voice.
The main thing is trying to figure out how to install the Google Voice app on your phone. If you can, you'll be scott free... outside of the alberta number.