Pre-wired white, 12-LED clusters are available from Hobby King:
http://www.hobbyking.com/hobbyking/stor ... HITE_.html
That said, unless you "build" exclusively in software, it will be extremely difficult to construct any kind of NBTV equipment if you lack basic soldering skills. I can confidently state that no one on the Forum was born with the ability to solder. A quick search on the Internet should unearth numerous tutorials and a bit of practice with bits of wire or simple kits should yield results. The keys to success include a quality soldering iron designed for electronic work and developing an "eye" for the appearance of a properly soldered joint.
Ralph