Diablo II cannot find CD

[Michael Brickenstein]

Hello!  
I've installed Diablo II and then tried to start the game.
Even if I start the game from the cdrom, Diablo II complains it
couldn't start because of

Drive error:
Make sure that Diablo II CD-Rom is inserted

(this is only my translation)

my wine config cdrom part:

[Drive M]
"Type" = "cdrom"
"Path" = "/cdrom"
"Label" = "/cdrom"
"FS" = "win95"
"Device" = "/dev/cdrom"

system.reg

"DiabloIICD"="M:"
"InstallPath"="C:\\Program Files\\Diablo II"
"Program"="C:\\Program Files\\Diablo II\\Diablo II.exe"
"Save Path"="C:\\Program Files\\Diablo II\\save\\"
"SmallInstall"=dword:00000001

so are my rights on the cdrom

cd /dev
ls -l cdrom sg0 scd0
lrwxrwxrwx    1 root     cdrom           3 Aug 17  2000 cdrom -> sr0
brw-rw----    1 root     cdrom     11,   0 Sep 25  2000 scd0
lrwxrwxrwx    1 root     root            4 Sep 25  2000 sr0 -> scd0 

groups
michael cdrom floppy audio users 

Can somebody help me, please?
Thanks,
Michael