[CentOS] Are these steps for re-installing Gnome correct/safe?

Wed Aug 17 02:28:01 UTC 2005
Dave Gutteridge <dave at tokyocomedy.com>

My desktop environment has become a little chaotic, and, long story 
short, I would like to uninstall KDE and Gnome, and then reinstall 
Gnome. (I want to remove KDE for the time being because I just don't 
think I want it taking up space on my hard drive).

The thing is, I don't want to throw the baby out with the bathwater. For 
instance, I want to make sure I don't lose settings in X, like my 
xorg.conf file. I just want to reset my Gnome interface back to how it 
was when I first installed it.

I'm thinking the steps I need to take are roughtly these, but it would 
be great if someone could verify that these will be a non-destructive 
way of getting Gnome back to it's original state:

1. Stop X (By running telinit 3 at a command prompt?)

2. Use YUM to remove Gnome and KDE (#yum remove gnome kde?)

3. Use YUM to install Gnome (#yum install gnome?)

4. restart X (#telinit 5?)

Could someone clarify if I have the commands right, and if this process 
is safe to undertake?