So a quick google search gave me this http://forums.wowace.com/showthread.php?t=1814, with
Code:
/script ChatFrame1:SetJustifyH("RIGHT")
as the solution.
Seeing the post is from 2005 i'm a bit hesitant to try it - does anyone know if the script is "safe" to use?

---------- Post added 2012-09-16 at 09:12 AM ----------

No inputs at all?