Thanks again, So it means that I will have another dhcp server but its setting will be restricted to the block of ip's intended for my cluster. Thats pretty understandable.My google search found a thread which has the following info which I want to share with you and other members.This was taken from RHEL Documentation.
6.4.9.1.3. Building Bootable Kickstart ISOs
While you can schedule a registered system to be kickstarted to a new operating system and package profile, it is also useful to be able to kickstart a system that is not registered with RHN, or does not yet have an operating system installed. One common method of doing this is to create a bootable CD-ROM that is inserted into the target system. When the system is rebooted, it boots from the CD-ROM, loads the kickstart configuration from the RHN Servers or your Satellite, and proceeds to install Red Hat Enterprise Linux according to the kickstart profile you have created.
To do this, copy the contents of /isolinux from the first CD-ROM of the target distribution. Then edit the isolinux.cfg file to default to 'ks'. Change the 'ks' section to the following template:
label ks
kernel vmlinuz
append text ks={url} initrd=initrd.img lang= devfs=nomount ramdisk_size=16438 \
{ksdevice}
IP addressed-based kickstart URLs will look something like this:
http://my.sat.server/kickstart/ks/mode/ip_range
The kickstart distribution selected by the IP range should match the distribution from which you are building, or errors will occur. {ksdevice} is optional, but looks like:
ksdevice=eth0
It is possible to change the distribution for a kickstart profile within a family, such as Red Hat Enterprise Linux AS 4 to Red Hat Enterprise Linux ES 4, by specifying the new distribution label. Note that you cannot move between versions (2.1 to 3) or between updates (U1 to U2).
Next, you may customize isolinux.cfg further for your needs, such as by adding multiple kickstart options, different boot messages, shorter timeout periods, etc.
Next, create the ISO as described in the Making an Installation Boot CD-ROM section of the Red Hat Enterprise Linux 3 Installation Guide. Alternatively, issue the command:
mkisofs -o file.iso -b isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 \
-boot-info-table -R -J -v -T isolinux/
Note that isolinux/ is the relative path to the directory containing the isolinux files from the distribution CD, while file.iso is the output ISO file, which is placed into the current directory.
You may then burn the ISO to CD-ROM. To use the disc (assuming you left the label for the kickstart boot as 'ks'), boot the system and type "ks" at the prompt. When you press Enter, the kickstart should begin.