PXE server automation

This is what I'm trying to do if it make sence. I have 8 clients and only one of them is directly connected to the altiris console(the connected pc will be called client 1). The other 7 are behind firewall and they can only talk to the client 1 that is connected to the console. I was able to image client 1 and not able to do so for the other 7 since because they do not have a direct network connection to altiris console. I'm looking for a way to use client 1 as a slave pxe server so that pushing image to the other 7 system will be easier since they all talk to client 1. This project is to be able to image all 8 system by just pushing the jobs from altiris console. I'm looking for a way to do this with less intervention. Thanks for your response.