Known systems to be renamed during OSD

Hi,

We are running SCCM2012. We have some machines and we need to rename those machines during OSD. After booting in winpe, we are asked to select task sequence. As we select task sequence, it just proceed to execute the task sequence. Is there anyway to change the system name during OSD although systems are in Sccm 2012 already with some different name?

Also, any ideas if there are any scripts for sccm 2012 to generate a computer name on serial number or any other convention?

Thanks in anticipation.

Farzan