tech question

[popbox]

    Excuse me for foolish question and "pig latin". 
     I'm a new user of FreeBSD and I have a trouble with mounting DVD. There is no separated information in your documentation (Handbook) about this question.
I tried to mount DVD the same way as CD. It is not enough, I think.

    My OS: FreeBSD 4.10
    Drive: acd0: DVD-ROM <TOSHIBA DVD-ROM SD-M1912> at ata1-master PIO4 (dmesg oitput).
    The disks that I want to mount are "Collection of FreeBSD ports" of your russian diller linuxcenter.ru

    Thank you.