Nothing I have found would allow it to seamlessly auto start
Alt+T+G+T get's kind of annoying.
However I did find a good way to happen automagically
I have found that microsoft "scriptit" rocks. It allows you to "sendkeys" as if you had pressed them.
-- start.bat --
scriptit.exe "C:\Program Files\Microsoft Streets and Trips\start.ini"
-- end start.bat
-- start.ini --
run="C:\Program Files\Microsoft Streets and Trips\strees.exe"
Map - Microsoft Streets & Trips =!t#g#t
-- end start.ini
Just make a shortcut to the .bat file you created and tell it to run minimized so you don't see the command prompt window blip on your screen. Something minor like this happens so fast you hard recognize it's happening. Sure does save a LOT of headache doing it manually though. Good luck!
Forum doesn't support .exe uploads, I found it by searching the net