This is a complicated WOW question read details!?

Okay. I got a trail of WOW annd it just ran out. My friend has the disc with the orginal game on it and the buring crusade on it. I put it in when my trail ran out and it said i already had WOW on my pc but it took me to the buring crusade installer. Then it wouldn't let me download it. Also i didnt get the 30 free days of WOW becausce my friend used it. So im just wondering. If i get a 60 day card for WOW will it let me play WOW with the burning crusade