Depends if your talking about the generic drop one, or the tradeskilled sided ones.
The generic drop one you'll just have to get lucky and find drop, and most likely be able to wear it there and then, the tradeskilled ones are a bit different.
First of all you need to acquire a form depending on your sided faction:
Sealed Order XITL-0127 for omni
Sealed Order BLCG-7791 for clan
or either for neutral, then you gotta go through the tradeskill process
http://www.ao-universe.com/main.php?sit ... nk=0&id=74 has the full guide on how to make em.
I don't know where the forms are dropping these days mind, not since they changed biomare, does the foreman still drop them?
but I do suggest only building the ql 80 suit if you get it, to save having to get more forms, 297 psychology is pretty easy to get even at the lower levels