Not really sure in 8.2. Try this:
mount /dev/cdrom /mnt/cdrom
There is one space between those. I just made it more obvious.
You may not need the first one. It may already have a directory for cdrom. At worst it will tell you it already exists. If the last one works then try this:
That is a small 'L'.
If you see a list of files then it works.
Also note, it must be a data CD not a audio CD. It won't mount a audio CD.
If you get Mandrake 9.2 it will do that automatically. 9.2 has a supermount feature and I don't think 8.2 does. Not sure though.
Hope that helps.
All this needs to be done in a term or command line.