cdrdao _can_ burn .iso images (among other things).

You just have to create a small TOC file. For example,

if your ISO9660 image is named "foobar.iso", then create

a small file "foobar.toc" with a text editor, containing

the following three lines:



CD_ROM

TRACK MODE1

DATAFILE "foobar.iso"



Then type "cdrdao write foobar.toc"