missing modules

[Dominique <domi@vision.ee.ethz.ch>]

Hi,

I am missing modules to use my cdrw with xcdroast: scsi_mod cdrom_mod 
etc. I have only ide-scsi and sg but I do remember seeing more (like 
SCSI support for ATAPI CDROM) in modconf. But's it's not in my system...

How can I fetch these modules? I am running 2.4.18.bf2.4

thanks a lot
Dominique