There is a whole forum on unlocking inside the jailbreaking one, way down below this general forum on the forums index page.
I learned a little about unlocking after buying an unlocked 3G on ebay. It's GPS doesn't work. I learned that is a common side effect of unlocking (or perhaps of Apple's reaction to the practise). Any unlocking involving "baseband 6.15" or the "ipad baseband" kills the GPS and it can't be brought back to life as far I as I can find.
Your Rogers locked phone should sell well on ebay because it can be used on the Speakout service in Canada, which has unlimited internet for $10 a month. Sell yours and buy a Bell phone?