I will be going to Ireland this spring. I purposefully purchased an ipad 2 last week with ATT 3G so it would have an unlocked GSM. This is what I think I need to do: purchase an Irish micro-SIM card with some prepaid amount on it. Here is the question: can I, a totally inept fumble fingers, switch out the ATT SIM card and put in the Irish SIM card? Or is this something better left to the Apple pros at the store?