I assume you mean creating a new sequence not a new project. Your project should have nothing to do with anything.
As for sequence, you could just drag your 2k footage to the create new sequence button and let Premiere set it up for you. More details would of course be helpful if this doesn't solve it.
Please NOTE that the PPro CS6 screen may look a bit different (I use CS5)
For CS5 and later, the easy way to insure that your video and your project match
See 2nd post for picture of NEW ITEM process http://forums.adobe.com/thread/872666
-and a FAQ on sequence setting http://forums.adobe.com/message/3804341