Gnome not booting after install

Hello. first Arch install. over all, has went well.
Everything has been fairly simple and straight-forward.
this is the only issue i am really having.
After all the package installing, and dependencies, gdm, etc.
i tried to boot gnome using: gnome-session.
this command yields this message:
** (gnome-session: 2914) : WARNING **: Cannot open display:
[root@METACYM~]#_
I have obviously searched this error, but have not found much that pertains to my situation. I figured the 2914 error must have some implication. but havent found info yet.
any help is appreciated.
thanks

tom5760 wrote:
Have you installed X?  Try:
pacman -S xorg
Once that is done, put the following in ~/.xinitrc
exec gnome-session
Then run "startx."  Gnome should start.
Check the wiki for more:
http://wiki.archlinux.org/index.php/Xorg
http://wiki.archlinux.org/index.php/Gnome
thanks the second command actually yields the error i posted.
X was installed, but i am assuming there will lye my problem.
i am just not sure about specifics.

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