When you load static objects the level is exactly as you saved it(including textures and collision areas) , i use this myself for level creation using a simple editor i created.
To make an object collid with static objects you need to make static collision boxes when you create each static object, then you need to define an area that you want to collide with the static areas:
this would be for an FPS(code),but if you just copy and paste it ,it probably won't work cos i dun it at college.It should show you how to do it though.
Is the glass half empty - or half full?
you can have it all - Just not all at once