Olle finds programming languages interesting, to the point of distraction. One a week is not an irregular figure.
This week it's R, last week was REBOL, and the week before that was Common Lisp. Read that list backwards for priority in getting it right.
I printed a tutorial booklet on REBOL, and saw that magic word XML-RPC in it.
REBOL + XML-RPC on Windows = a New Plazes Launcher.
Just take a look here, at the examples. I need to read your Ruby launcher, to see what it does, and then reimplement it in REBOL.