although neotrace is a very easy program to use and gives the isp, from past experiance (maybe its changed) its gives the origin of a transmission as the owner of the isp so say you tracert someone on aol they automatically are located in Dulles, VA.

i like using the tracert in sam spade. it dosn't have a graphical map but its easy to save to log or get the abuse address for different isps

i have to fully agree with HT. scanning anybody is not against the law and i too scan on a regular basis without a peep from anybody.