Czech Republic

O2 stores will sell you a SIM card for around 300kr. These are all PIN protected and the PIN is on the card you press the SIM out of. Once the SIM is in your device it will activate itself. You then need to select the Internet tariff by testing "INT" to 999111. This will activate within 24hrs and then younwill be charged about 20kr per week for data access. I believe you can make calls and text from this tariff but obviously at a premium rate since the idea is that this tariff is aimed at data users.