FSX Software Development kit

Now, this is my first post and I know its been mentioned before but I cannot find the information I need anywhere, IVE SEARCHED HIGH AND LOW AND IT IS NOT TO BE FOUND! :-/
ok. I have FSX (Deluxe). I have run the setup program for the SDK and it says it is installed and the files appear to be there. Now in the FSX SDX tutorial (for mission creation for example) it says that the tool is to be found in the window bar when you press alt when flying. when I press alt the 'tools' dropdown is not there and i get no simconnect prompt at startup or anything!
its really annoying as I would like to get further into the world of FSX by creating my own missions/aircraft etc. can anybody help me or point me in the direction of some assistance?
many thanks
Tom
ok. I have FSX (Deluxe). I have run the setup program for the SDK and it says it is installed and the files appear to be there. Now in the FSX SDX tutorial (for mission creation for example) it says that the tool is to be found in the window bar when you press alt when flying. when I press alt the 'tools' dropdown is not there and i get no simconnect prompt at startup or anything!
its really annoying as I would like to get further into the world of FSX by creating my own missions/aircraft etc. can anybody help me or point me in the direction of some assistance?
many thanks

Tom