I had a person e-mail directly asking for more information about blogging from a Treo. I'll see if I can put a tutorial together to publish online.

There are two things I had to figure out: First, the blogging apps on the Treo ask for the XMLRPC path which is /cgi-bin/mt/mt-xmlrpc.cgi on my server. Second, the web services password is not the same as the password you log in with to manage your entries. To find the web services password (or to change it), from your blog dashboard, go to System->Users and select your user to edit the user profile. Next to the web services password is a JavaScript link labeled "reveal." Selecting that link will create a dialog window with your web services password in it.