David Williams (asker) Jan 20, 2010:

That would be a CD-RW, not a CR ROM, as I and Thayenga already pointed out...

gangels (X) Jan 20, 2010:

read-only as opposed to 'read-and-write'

Thayenga Jan 20, 2010:

David Well, this is the only thing that would make sense in this context, though that is indeed quite redundant.

David Williams (asker) Jan 20, 2010:

Draft translation "Optionally available on CD ROM read-only or by import into the (...) database."
Although given that it specifies CD ROM, saying read-only seems rather redundant (unless the author is assuming his readers don't know what ROM means when talking about CDs).