If only I had your skills with the FSX SDK.

Wow! :o That's one of the best thing I ever heard ,Coming from a great designer , Of course you got it J.C. ,I saw that Jet Truck you just made ,all we got to do is keep struggling ,searching I N V E S T I G A T E is the key,..ask ask ask, J.C.
, To get all the info about the FSX-sdk wasn't that easy as it looks ,and the most difficult part is the installing and succesfully get a *.xanim and *.X ,That was hard for me , I learn everything in FFDS and believe me ,some people rather stay quiet ,because from now few things are like a secret due that was hard for them to find out these thing ,and I understand them..
Come on Kat I don't even speak English as you do and Im 43 my mind is not that faster than it used to, your very young !
1Download the latest Direct9 runtimes
2your sys must be in english american for the period for decimals Not comas
3install Frameworks 3.5
You must know How and where to place the FSX gmax, right?
all this is quite long try to do this thing and the export a box ,to mdl in gmax ,See if the mdl has size ,or do something more complicated like a box and a spere ... check if they have a size..
If they give you errors ..READ what it saids and bring back to me..okay?
EDIT: I forgot Do not pay too much attention to the reading material of the SDK is a B****S******* most of the things it says are not according to the real...