How do I make install disk with initrd.img??

From: Matta (Mata_at_Ottu.com)
Date: 06/21/04 

Date: Mon, 21 Jun 2004 13:52:28 -0400

Hello Everyone,

Now, I'm trying to make the install disk for network installation.
I downloaded bootdisk.img and tried to boot, however, I saw the error
message, "initrd.img", it seems that I need initrd.img to boot it. How do I
make the install disk w/initrd.img?? Please let me know. Thank you,