asterisk users - Apr 2007 - SVN update

I haven't updated for a while and when I looked on the web site how to 
do a SVN update, I cannot find it anymore.

CLI> show version
Asterisk SVN-branch-1.2-r42600M built by root @ asterisk on a x86_64 
running Linux on 2006-09-10 22:52:42 UTC

1. Where is the description for the SVN update now?
2. Is there anything I have to take care of when updating from such an 
old version?

Thanks!

bye

Ronald