Yeah, well, you have to have been a member for ahile and show that you are Mod material. After a while, you might be asked to moderate a certain part (most likely the part you frequent most and contribute to) of the forums.
Once a Moderator you again have to prove your worth for the next advancement which is Super Moderator, which is a global moderator.
Eventually you might be asked to launch a new site for a new LucasArts game, for instance, in which case you will earn the title of Admin.
This could take about 4-5 years to get thru all ranks depending on wether or not a new game from LucasArts gets launched that year, but if you hang in there you might attain it eventually.
Happy First of Aprils Day!