The title is for people who joined the forums before May 2009. You can't "claim" it until you apply your retail key.
You can claim them now apparently. Go to the C-Store, then grab them from there. You'll end up with two solid grey items in your inventory (honestly you'll think there's nothing there at first), and you then right click and equip them. Then they'll show up in your title list.
When will we get our steam retail key? I want my TOS uniforms, also the del taco ships, is that just one ship for one char or one ship for each char?
That's not really what this thread is about, but what I have heard is that Steam will update with the keys tomorrow at around 11am PST. Of course, seeing that Valve never does anything on time, you can probably bet on it being closer to 3pm PST.