How to configure more than one OS/s in WDS

RIS OR WDS in windows Flavour ServerS
either it is possible that we can configure Both windows Xp and Windows 7
while Configuring Windows Deployment Services at same time,for the cleint machines
your choice either you want setup to boot from xp OR Windows 7 ,
( i am not expection the answer as configuring WDS separatly ,one for Xp
and other for Win 7)
I will appreciate giving explanation of how to do so if possible

Windows Deployment Services is used to remotely install an operating system.

Basically you set up a server with WDS on it.
Then you create install images.
Then you load those images onto a device.
Dual boot is possible.