Making NS_Initembedding look into a custom directory for GRE.

[Abhilash Maniam]

Hi,

I want to initialize XPCOM using NS_Initiembedding but would like to 
specify a different directory for the GRE. I understand that I would 
have to write my own implemenation of nsILocalFile but which functions 
should I be overriding and how does this work?

Please guide.
Thank you.
abhi