How to get involved - where is the source code?

[Gabor Szabo]

I though I'll try to take a look at the Bugzilla codebase in
order to see how can I be involved and here is what I found:

http://www.bugzilla.org/  has a link "Contribute!" which is great.
It leads to http://www.bugzilla.org/contribute/ that has a link "Code".
Clicking on that link I get to a page
https://wiki.mozilla.org/Bugzilla:Developers
that starts by telling me to introduce myself on the list.
I'd probably put that later but that's a less important issue.
The problem is this:

4. Check out the latest Bugzilla code from CVS.

Reading the mailing list I recall that Bugzilla has moved to Bazar
so this confused me very much. Should I still use the CVS or Bazar?
If the latter, can someone please update the explanations?

regards
  Gabor