[asterisk-users] prob with debian and chan_zap

[nephish]

hey there, newbie here with a quick question.
i just installed asterisk from the packages at digium ( not the deb
files , i use debian 3.2) 
the zaptel package seems ok, and the asterisk install seems to go ok.
but it keeps trying to restart on me with a failure.
here is what i get from /var/log/asterisk/messages:

Jul  7 12:55:30 NOTICE[6823] cdr.c: CDR simple logging enabled.
Jul  7 12:55:30 WARNING[6823] res_musiconhold.c: Unable to open pseudo
channel for timing...  Sound may be choppy.
Jul  7 12:55:31 WARNING[6823] chan_iax2.c: Unable to open IAX timing
interface: Permission denied
Jul  7 12:55:31 NOTICE[6827] res_musiconhold.c: Request to schedule in
the past?!?!
Jul  7 12:55:31 WARNING[6823] chan_zap.c: Unable to open
'/dev/zap/channel': Permission denied
Jul  7 12:55:31 ERROR[6823] chan_zap.c: Unable to open channel 1:
Permission denied
here = 0, tmp->channel = 1, channel = 1
Jul  7 12:55:31 ERROR[6823] chan_zap.c: Unable to register channel '1'
Jul  7 12:55:31 WARNING[6823] loader.c: chan_zap.so: load_module failed,
returning -1
Jul  7 12:55:31 WARNING[6823] loader.c: Loading module chan_zap.so
failed!

i don't get the permissions thing i have done a chown asterisk on
everything in /dev/zap/ and even tried to run as root.

this is my first day with asterisk, so please be easy. i have the
O'Reilly book though :)

thanks for any tips.
sk