<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by beltway:
I only get a "session expired" page, and it's not clear where the seatmap option is even if you create a new account. Hints?</font>
I know, it stopped working for me as well.
All I do now is goto
www.itn.net and go through the flight selection process and click on "select seats".
Sucks, but does the job for now.
-JC