[NBLUG/talk] apt-get question

[Robert Hayes]

I installed Knoppix on my hard drive, and have the video and net running now.
Knoppix doesn't come with the full gnome environment installed, and I'd like 
that.
It is also installed as a testing/unstable release.

Do I have this right? All I have to do to update (upgrade) my running system 
is change the line in /etc/apt/apt.conf from

APT::Default-Release "testing";

to "stable"

Can it possibly be that easy?

Then I just run dselect?  How is apt-upgrade different from the "Update" 
feature in dselect?

Thanks in advance.

Bob