Lol, I saw the PM but not the thread. Things all good.
On the off chance someone does a Search and finds this, looking for answers:
That post has both links.
What he said. Though USDOLLAR is a chart of FXCM's own creation.
USDX is just the Cash Chart for the Future's contract. There are a few places with the Future's contract data as well. All work roughly the same.
S&P500 correlates highly with the USDJPY during the New York hours. After the Japanese stock exchange closes, there's a very definite control-board change for the currency. (There's also the issue that all of the SE Asian Central Banks close up their bank order book for the "day", as most of...