[ms_j_a]

I'm quite new to my Blackberry Bold and I have a few questions. I'm live in Canada and am going to the UK at the end of the month. What do I need to use my blackberry in the UK. I have contacted my provider and the international rate is absolutley out of the question. I have put an international block for my account so they can't charge me roaming charges, but have been assured that I can still use WiFi and for data based applications. Is there a better way? I am also concerned about recharging. Do I need to get a voltage minimizer, or am I ok with just using an adaptor for the plug type with my recharger that came with the Bold. Also, if I recharge through a computer in the UK, is this going to be a problem. Any suggestions, help, advise would be appreciated.
Thanks