Hey McFox.... lighten up!
No need to get so fired up with poor ol' Coadster (anyway, gotta stick up for a fellow Aussie :-))
I too have a lot of fun with these dudes, while collecting material for a book I'm writing (their inventiveness leaves one speechless). I have actually been working on trying to convert 2 of them to making a 'semi-honest' living (yeah I know, I'm an optimist ;-)
Nowadays, they generally purport to be from a European country rather than Nigeria, Sudan, etc.
To etablish their true Cyber-location at the time of sending the email, simply check your Email Properties by right-clicking the email Subject header and selecting <Details>. If you do this you will see the originating IP address at the top of the popup Details screen.
To track this to its geographic source use DNS resource like
www.dnsstuff.com where you can do an IP geographic lookup to find the country where the IP address is allocated.
NB: Just remember this is not 100% foolproof as they can always make an International call from Africa to a dialup ISP account anywhere in the world (damn!... hope your Secret Service don't start tracking me for giving away potentially 'criminal-secrets'<big grin>)
Have fun!