Cannot open include file lg_defs.inc

[Franklin W. Cain]

Have you downloaded the LGEO package?
If so, is the path to the LGEO folder in the POV-Ray search paths?

I've used the All-in-One Installer, so I presume I've got that library somewhere on my PC. 

I presume it's this folder... 
G:\LDraw\LGEO

How do I check the search paths for POV-RAY, please? 
I looked for a means of configuring its default parameters, but like I said, it's been an age... 

Thanks, 
Franklin