NC..
If you have the SDK installed, your dll.xml will already have entries for the various SDK components added..
minus the path to the SDK. From memory, all you have to do is add the path to the entry and save. By default.. it leaves the paths clear so (for example) the entry for Traffic Toolbox will look something like this:
Launch.Addon
Name>Traffic Toolbox/Name
Disabled False/Disabled
ManualLoad False/ManualLoad
Path>..\Microsoft Flight Simulator X SDK\SDK\Environment Kit\Traffic Toolbox SDK\traffictoolbox.dll/Path
/Launch.Addon
I don't know how to add code to a post so your entry will have a few more < and> than this. All you should have to do is change the Path> line. I have the SDK installed on E:\ (my flightsim drive) so my path looks like this: Path>E:\SDK\SDK\Environment Kit\Traffic Toolbox SDK\traffictoolbox.dll (hoping that this will show as I've added all the code.. some didn't but you should be able to get the idea). If in doubt.. make a backup of your dll.xml in case it all goes wrong so you can put the original back

ATB
DaveB