Would A "Bell" Blackberry Curve 3G, Work On A Roger's Network if I Unlocked

it And if it's An HSPA Phone? Heres: The Prouduct Info: Connectivity

* Network: HSPA
* Global access
* Wi-Fi
* GPS
* Bluetooth® 2.1
* Micro USB

Operating system

* BlackBerry OS 5.0 (upgradeable)
* App store: BlackBerry App World

Messaging

* POP3 e-mail, ActiveSync
* Instant messaging
* Text, picture and video messaging

Productivity

* Document viewer with editing capabilities (DOC, XLS, PPT, PDF)
* Calendar
* Calculator
* Contacts

Web browsing

* HTML browser

BTW Would it Work Vice Versa?