In case you did not notice, LoadRunner 12 is released and available for download
http://www8.hp.com/us/en/software-solutions/loadrunner-load-testing/index.html
Notice the "trial" limitation is given by the included license key, all limitations are related to the amount of vusers that can run in controller with this key, there are no hidden features nor additional limitations on this installer media.
Eddy Segura
HP LR/PC Support
If you are customer you can try posting on our internal forums for more personalized support.
LoadRunner:
http://h30499.www3.hp.com/t5/LoadRunner-Support-Customer/bd-p/loadrunner-support-customer-forum
Performance Center:
http://h30499.www3.hp.com/t5/Performance-Center-Support/bd-p/performance-center-support-customer
How to:
http://www.youtube.com/watch?v=4ChlysWupWM
If you find that this or any post resolves your issue, please be sure to mark it as an accepted solution