Changing Base Plane

I have an assembly that I am rendering using PV360 instead of PhotoWorks.

I assume PV360 uses the Top Plane in the assembly to establish what surface would sit on (for example) a table in the scene. I want to change it so that the product is lying on it's back on the table .

If I try rotating the part, the scene rotates with it.

What is the best way to acheive this?

Thanks

SolidworksPhotoview 360