New TimeZone in Argentina

We in Argentina are changing Timezone soon, and it is a good idea to consume lower energy, the energy problem is worldwide, not only from here... Ok, what comes to question is the problem that our Linux machines will have if the timezone changes. Here i explain how to "hack" the timezone, until the people that maintains the global timezone files do update them...

Download the newest timezone file:
wget ftp://elsie.nci.nih.gov/pub/tzdata2007k.tar.gz
unzip and untar it in a directory like /tmp

--- This is no more needed since the new Timezone has the changes -----
Edit the file called "southamerica"
Look at the lines that say:
# Buenos Aires (BA), Capital Federal (CF),
Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
-4:16:48 - CMT 1920 May # Cordoba Mean Time
-4:00 - ART 1930 Dec
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART

At the end of the block it should look like this:
-4:00 Arg AR%sT 1969 Oct 5
-3:00 Arg AR%sT 1999 Oct 3
-4:00 Arg AR%sT 2000 Mar 3
-3:00 - ART 2007 Dec 30
-2:00 Arg ART 2008 Mar 16
-3:00 Arg ART
------ End -------
The new Timezone has the changes already done, so just do this:

zic southamerica
rm /etc/localtime
ln -sf /usr/share/zoneinfo/America/Argentina/Buenos_Aires /etc/localtime

That would do the trick.