yup, i know all about xs++ 3.1 justme ;), I just finished helping a friend debrand and customize his w580i with it a few weeks ago.

i don't know if this is considered spamming, but why don't you just refer people to the very-well, already made guide to 3.1 (including FSX use), found here? it's made by one of the xs++ 3.1 developers, and is very easy to follow