Recently my friend had given me the Dragon Age 2 CD. I have installed it in my computer. I didnít think that the EA or may be Bioware will provide lot more security to its game even if the game is retail version. After the installation I ran the game. At the startup of the game it asked me to insert a serial key. I have put my friends CD key but it didnít worked for me. What can I do now? Should I need to buy the serial key once again?