Activite a new prepaid number yourself on bell.ca once its fully activated do an esn swap of the new activated pre-paid to a different esn which will free up the esn of the newly activated pre-paid then just log into your regular account & do a swap..
Just for info when you activte the prepaid it comes with $50 credit you can use that to donate it http://mobilegiving.ca/?page_id=44
My Month to Month Bell Plan on HSPA/EVDO
15000 Outgoing Seconds a Month(250Min), Unlimited Incoming Calls, Unlimited eve&weekend 6pmto8am,Unlimited Text From Canada to Canada&USA Incld LandLine, Unlimited FWDing, Enhanced Voice Mail, Caller ID, Conference Calling/Call Waiting, If I go over my 15000 Seconds (Extra seconds are 2.5c for every 15 seconds)=10c a Min, Canadian LD 2c for every 15 Seconds=8c a min, USA LD = 3.5c for every 15 Seconds=15c a min,
$22 a month + BC Taxes @ 12%