superfly

I've followed the guide for the multi-boot dvdr, I have that working, but I was thinking of making it more custom. I have each install (2000, xp, 2003) setup for 3 installs each, regular, unattended and oeminstall. Is there a way when selecting oeminstall to be able to select which extra oem apps get installed before the oeminstall starts. I was wondering if I can pass variables into a batch files which will load the string to start the install, but I'm not sure if thats possible. Any ideas/websites would be much appreciated. I found this, http://www.MSFN.org/board/index.php?act=ST&f=70&t=11061 , which is what I'd like to do, just before the windows install, not after in the RunOnce[Ex] section. matt