How do I configure a dock like this?

Is there a certain theme (for Rk or Yz?)

Or would I have to create the text icons myself?

Try searching next time. Look in the Icon Release forum or under dock icons at deviantArt.

Thread moved to proper forum. Consider this a warning.

Really isn't that difficult. Search for "text icons" in the Icon Releases forum, and set your RK Dock background's opacity to 0%.