This is the email response I got from TM rep. Seems pretty straightforward to me -- if this is correct info -- though have no reason yet to believe it isn't.
If anyone here thinks otherwise, let us know...
******
I am writing in reply to your inquiry into how Daylight Savings
Time will be handled this year for your Blackberry.
This is a great question! Fortunately this will not affect you
Victoria. When you turn on your Blackberry and it establishes its
connection to the tower, it automatically checks the time on the tower
and if the time is incorrect it will either automatically update, or
prompt you to select the correct time. This is a great feature that
solves a lot of problems, and you can use it to verify the time on your
home clocks as well. So just be certain on the morning of March 9 to
turn your Blackberry off and back on so it can check the time on the
tower.
To adjust the date and time, perform the following steps:
1. At the Home screen, scroll to the Options icon and click the
trackwheel.
2. Scroll to Date/Time and click the trackwheel.
3. Click Time Zone field and click Change Option.
4. Choose your time zone and click the trackwheel.
5. Scroll to Date/Time Source and click the trackwheel.
6. Scroll to Update Time and click the trackwheel.
7. Click the trackwheel again to open the menu and click Save
You can find out more by visiting
Cell phones and wireless plans - Stick together with T-Mobile.
*Type xxx8220;time 8700xxx8221; in the Type Your Question box
*Click search.
Information about the Daylight Saving Time dates for this year can be
found at (link)
Daylight Saving Time - Overview of Daylight Saving Time