well.. when you own the PRO Edition of 3DGS, you can hide the Startup Screen with the WINSTART commands in a WDL Script (same name as your main lite-c Script).

With Commercial and lower, you can try the Window Overlay Project:
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showgallery&Number=340545

Selling my Acknex Engine Editions (A7 Com & A8 Pro):
>> click here if you are interested <<