I have installed AI Carriers by Lamont Clark to my sim(FSX sp1). When I start FSX I get an error message telling me That there is a problem with the simconnect. Apparently you  have to edit the - %APPDATA%\Microsoft\FSX\EXE.XML file in order for the sim to open the addon carriers. Being a novice I can not seem to find this file. Does anyone know the procedure to edit this so the simconnect will open the AI Carriers. The READ ME FILES STATE -
Manual installation
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Please use automatic installer unless it is failing.

1 - Copy the AICarriers folder to a directory of you choice. Memorize it as
you'll have to write it to a config file later

2 - With a text editor, Edit %APPDATA%\Microsoft\FSX\EXE.XML and add a reference
to aicarriers.exe so that it can be launched when fsx is started.
The file may not exists, so you'll have to create one.
Make sure you write down the correct pathname for aicarriers.exe
An example file is providen, see sample_EXE.xml

Thanks
robofbeth