Yes if the Blackberry is unlocked from network lock means you can use with any GSM Network Sim card,You cannot use with CDMA Network,T-Mobile is GSM Network sim card...You can get the unlock code at here
Ihav.net
and unlock your blackberry from Canada Rogers,then after unlock you can get the data plan from service provider use E-Mail,Internet etc...To remove the Rogers Logo everything you can go to store and debrand it,without debrand it ,the Screen logo will not removed from screen.