Good afternoon, I think you need to download from GTAC last version "Teamcenter integration for Creo", there you will also find documentation which you can read.
I'm not sure about the integration of the latest versions of Creo 5 and Teamcenter 12, you may have to contact GTAC to clarify this issue.
There is also a good specialist at the community RandyEllsworth, maybe he can answer you something on this issue.
NX 11 | SW 2016 | Creo 4 | TcUA 11.4
Evaluating: AW 3.4