How to upgrade FC2 to FC3 using yum

[C.F. Scheidecker Antunes]

Hi All.

Usually I install everything again through the CDs. However my servers 
are 40 miles away and the snow is not quite inviting for a drive there.
Therefore, I wonder if that could be done with yum.

I have the followin in my yum.conf

[main]
cachedir=/var/cache/yum
debuglevel=2
logfile=/var/log/yum.log
pkgpolicy=newest
distroverpkg=redhat-release
tolerant=1
exactarch=1
retries=20

[base]
name=Fedora Core $releasever - $basearch - Base
baseurl=http://mirrors.kernel.org/fedora/core/2/i386/os/

[updates-released]
name=Fedora Core $releasever - $basearch - Released Updates
baseurl=http://mirrors.kernel.org/fedora/core/updates/2/i386/


If I change /2/ to /3/  would that do the trick?

Does anyone has experience with this?

Thanks.