Add raster image and control points

[PhilCross]

How do I add a raster image and then fix it to an existing base map via control points

[JoeFlannery]

Wayne:

I'm not sure that you can georeference a raster in ArcGIS Online (AGOL). 

You may want to consider:

ArcGIS for Desktop
http://resources.arcgis.com/en/help/main/10.2/index.html#//009t000000mn000000

ArcGIS Explorer for Desktop (free)
http://webhelp.esri.com/arcgisexplorer/2500/en/add_raster_data.htm