I have a blackberry 7350 on Telus, how can I switch/unlock to Rogers?

I have a blackberry 7350 on Telus, how can I switch/unlock to Rogers?

Does it have a sim card? Telus has a CDMA network (no sim card), but apparently, they switched.

That's cool you get Telus and Rogers in Canada, much more original than the US AT&T and Verizon. When I drove into Canada, my AT&T signal became Rogers.

While it's true that Telus announced that they will be starting to use GSM in the future, none of their current hardware is compatible with GSM service. Your Blackberry 7350 unfortunately will not work on the Rogers network as it would not support SIM cards at all (whether locked or unlocked).