Now recently I wanted to switch from Juggernaut Tank to Dps spec, by refunding my skill points, commonly known as "respeccing". Otherwise known as resetting your talent points, or changing your build.
However I could not find the UI to do it, nor would my trainer let me drop my skill points. After much searching I finally found out where.
Luckily Gravity has made a nice post about it on his site, DarthJedi.
Short answer: at the Space Fleet, in the trainer area. Look for the Skill Mentor. Sometimes the role play gets in the way!