Install DBpro first, activate it online, then install and activate each plugin in turn (DarkPhysics, Dark AI, Dark Lights, etc. - I assume you got the promotional bundle pack!)
To use DarkGDK, you'll need to install Visual C++ 2008 first, open it at least once (C++ needs to do things) then install DarkGDK on top. Then add in the Dark GDK versions of the plugins last of all.
As far as I know, all the other TGC products are standalone programs and can be added in any order (though the Game Creator Store might be best
after FPSC).
I've no idea about Windows 7's DirectX version, so i don't know where you'd stand on that.
Hope this helps!
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