In the uk with an o2 sim. Email won't work.

I'm on vacation in London,uk and I picked up a sim card with o2 with 500mb data,blackberry bum,all that good stuff. Bbm works but email doesn't. I think I have to set up an o2 blackberry account. My question is can I set that up and not lose my Rogers blackberry email at home? I ask because it registers the device to the account,so will it screw up my home account if I switch the device to o2 while I'm here?

Posted from my CrackBerry at wapforums.crackberry.com