Boot from Network via PXE

Boot from Network via PXE

Hi ALL!
I have:
- OSD as part of ME DesktopCentral
- DHCP Server (MS Sever 2012)

How i can boot my new PC via network|PXE for setup my images for this PC ??
I tried use DHCP option 66 (used ME DesktopCentral Server IP ) - no way ((

HELP