Can you be more clear please.
Assuming that you need a basic circuit for white led, I am posting this link. Check this. **broken link removed** http://cappels.org/dproj/ledpage/leddrv.htm
Or simple google search will do.
A snap from second link. You might be interested.
Maybe you mistook me. I want the model, which is made of resisters and capacitances and stands for white LED while simulates LEDs in spice EDA tool.
Thanks!