k3b does not find device

[marco.borsatino at libero.it]

Hi.
On my FreeBSD 7.1 box k3b refuses to find my burning device, which present 
and works with DesktopBSD (same PC different slice). I've tried to understand 
why DTBSD finds the device and FBSD does not, but I could non find the answer. 

Access permissions to the device are total:
[root at odino /dev]# ll acd0
crw-rw-
rw-  1 root  operator    0,  80 Apr 11 10:02 acd0
but when I start k3b it tells 
me that id does not find any device. When I try to make it to recognize it, k3b 
tells me that I can't find any device.
All the requested programs are present 
(cdrdao, cdrecord dvd+rw-format and so on).
I've seen that DTBSD has configured 
a group <mount>, which is not present in FBSD, but I don't understand if this 
is a problem.
What should I verify? Or what should I configure and how?
Thanks 
for any help.

Marco