iam sorry for the English but my linux is still with this problem.
so you can configre this after configering DHCP server which will give you 3 options (1)DHCP clints(2)BOOTUP clints(3)both of them
after chosing BOOTUP the windows asks you to provide the IMAGE path where you saved a BOOT image for the clint computer to boot with when his computer ask for it.
on the clint computer you have to put the BOOT order to boot from LAN providing it with IP add. of the server ,which will recognise the computer requesting this and open the IMAGE path for ot to boot within.
i hope thatś all you gona need
تانك يو :D