[mythtv] Tuning TV via scan

[Cengiz Bayazit]

Hello All,
Just a newbie question,
Is there any way I can scan&tune channels automatically and maybe even
insert "good" channels into my channel list? I don't really feel like
writing a new grabber (at least for the time being) and the xml to
grab that info from... (I need to do this for air channels in Turkey).
Basically I need to scan all channels, get frequency information for
the "fine" channels and then insert the information into my channels.
I don't need epg for now , just something that lets me view the
channels.
Thanks 
-- 
Cengiz Bayazit