cost distance (to all from all?)

Discussion created by dep4g2 on Dec 11, 2012
I am kind of new to GIS and am taking my first GIS class.  I am trying to do a cost distance analysis and cannot seem to figure it out.  I am working on an archaeological project in which I am trying to deduce the least cost path from two archaeological sites to around 25 diffferent obisidian sources.  So far, I have created a cost raster based on my DEM.  When I try to run a cost distance, it is only giving me values for the cells immediately surrounding each point.  Should I have my sites and my sources as two seperate layers?  It seems to only be calculating a path from the sources/sites to themselves rather than from one to the another.  Does anyone know how I could do this. Again, I am new to this so I apologize if this is a dumb question.