[reese]

on each box...
ipconfig causes the doss window to flash for a second
-if that and go away.

web based ip detection reveals 75.93.6........
That looks wrong. never seen an ip adress that didnt
start with a 192.

is there another -reliable, easy way to verify each ip adress?

it looks like you are saying, in your case to use what ever
the last 3 digets are. in your case -xxx.
is this right?
utorrent > preferences > connection > port used for incominf connection
= whatever the last digets in the ip adrress of each box?