Ultimate Boot CD

Hi All,

I'm hitting a wall with the need to boot from a USB DiskOnKey and load a
fresh new install.

Let me explain what I need:

I have a server that I want to load 5 Clean OS installs on it.
It is an OnDemand OS install.

My end user can ask me to install:

WBEL 3.0
WBEL 4.0
CentOS 3.6
CentOS 4.2
Windows 2003 Server

Each one of these installs should wipe the IDE HD clean and start a fresh
install, or load an image of pre-installed setup.

At my disposal are the following:

1 USB Disk On Key with 250MB with Write Protection after configuration.
1 IDE 80GB HD
1 Repository FTP Server with plenty of room for ISO's , Images etc (about
30GB of available space).

What I need?

I need to be able to boot from the USB DiskOnKey (no problem here), and pull up a menu of options:

Remove all Existing Data and Install from Network WBEL 3.0
Remove all Existing Data and Install from Network WBEL 4.0
Remove all Existing Data and Install from Network CentOS 3.6
Remove all Existing Data and Install from Network CentOS 4.2
Load Windows 98 boot floopy

Removing all Existing Data actually is done via the install process of the
Linux distributions with Automatic partitioning of DiskDruid.
So,. how do I create a menu/grub/lilo that will load the correct
installer/bootable disk of the selected distribution?

Thanks,

- Alon