I got ERPXE setup on a fresh Ubuntu 12.04 setup and I have it tested and confirmed working with all of the plugins I have chosen to utilize. May I saw that this is some amazing software!
I do, however, also have a SCCM 2012 server that services all of our 1k+ systems within our network. I heavily utilize pxebooting from it and image machines. I've tried following guides based of the WinPE 3.0 and ActivBoot disk guides, but filenames are different (for example, there is no pxelinux.0 files within the smsboot folder of SCCM) The latest updates for SCCM to allow support for Win 8/8.1 and Server 2012 have WinPE 5.
Has anyone had luck getting a similar setup going? A menu option which 'forwards' the client to boot from sccm when selected? I tinkered with the idea of creating a Boot CD within sccm and utilizing the ISO files, but ran into similar snags.