I purchased O'Hare for FS9 a few months ago and I was wondering if I get the FSX version free? This seems like standard practice with other scenery developers.
Well, strictly speaking, it wasn't so standard practice until we started doing this, when we released Zurich...
As explained on the web site, all our products (except FSX only products, like Greystone and XPOI, of course) have an activation that is shared between FSX and FS9. In fact, there's no FS9 activation or FSX activation. The activation is for the *product* and is saved in Windows.
So, if you install the FSX Trial after having registered the FS9 version, the FSX version will be already act as a registered version, without the need to do anything.
Instead, if you want to use the FSX version on a different machine than the FS9 version, you simply install the FSX Trial on the new machine, and use the "Register Serial" feature to activate the Serial Number you already have on the new hardware. In this case, if you want to use FS9 on a PC and FSX on another one, it would use 2 of the 6 activations you have.