You can see the path to images in the sample source or by using your browser's dev tools to inspect page elements in the live sample.
What image(s) are you looking for? Can you post a link to a sample that uses images you want to use?
How about http://help.arcgis.com/en/webapi/javascript/arcgis/demos/mobile/mobile_soilmap.html[/url]
I want the bluedot.png
When I select View Source in IE I get as the path
var symbol = new esri.symbol.PictureMarkerSymbol("images/bluedot.png",40,40);
What dev tool are you suggesting?
Thanks! This was very helpful!