The Traffic Toolbox.sdk(software development kit), like all other SDK's are packages that give the FS user/designer information on building/modifying various areas or files within the FS program package.

None are necessary to use your Flight Simulator.

This one contains instructions and (dos)utilities to modify your AI traffic..

IMHO: The freeware utility, 'TrafficTools' by Lee Swordy, has been around for a long time and is a much better program for working with AI traffic, and includes a very good instruction manual.   It is available here at SimV.

The SDK does have some extended features and if your comfortable with the dos command line might be worth looking into.

Cheers,
Dave

there is a MS traffic program that gives you a explorer window with AI traffic in your area or can give you a map of AI planes.

The explorer is easier to use as it lets you know what planes are doing what, TnG, enroute, taxing or sleeping.

I can check at home and post but was almost positive I got it from the MS site. ???

You get to it from the tool bar during the game. You can click on a AI flight and right along.