HTTPS from a pxe built using rom-o-matic

[Subhash]

Hello,
I have an existing setup that has the following
An undi only pxe has an embedded script that makes an http:// call to get the winpe installation steps and so on.
It also can be chained for some HP machines to load ipxe.pxe and then http:// call to get winpe installation and so on.

--- Everything is working fine so far ---
only requirement is to make the http call to be https://
-------------------------------------------------------------
Q1> how can I build undionly that support https feature as currently it only has http tftp dns etc.
I only want to authenticate the server.
a> I will get a certificate from the company root certificate
b> Install the certificate on my server. Enable the SSL on the IIS webserver
c> get the public key for this certificate as *.cer file
d> use this .cer to generate the pxe
Q2> How to use the rom-o-matic to specify the certificate and build?

Thanks,
Subhash