dual boot
 

How to dual boot PC with kick start installation method.
I want to install windows 7 and rhel 6.

what do you mean by kick start method? Usually first you install windows, next comes linux and you are ready.

dual boot
 

I want to install both os with kickstart

There is a detailed explanation of using kickstart at the Red Hat site below. I believe it is only going to work on Red Hat or derivatives and I can't imagine you could use it to install any windows.

https://access.redhat.com/documentat...ickstart2.html

Yeah, you'll need to manually install Windows (making sure to leave enough disk space for linux), then you can kickstart the RHEL install following the docs yancek linked.