Customize MOSS 2007 portal Server without unghosting

Hi guys:

This is my first question in this forum. Recently the company when i work for wants to update from SPS 2003 to MOSS 2007. I'm worried about if there's a way to customize the MOSS 2007 content pages without unghosting the portal pages. I don't have Sharepoint Designer 2007 for now because i don't have enough licenses. But i want to modify the master pages/layout content without make the page unghosted. Is there a way to do this?. or, is there some information about how to do this with/without SPD 2007?

Thanks in advance

PhoenixZero

[634 byte] By [PhoenixZero] at [2008-2-22]