Jorge,
I got such an animal working with Nettalk 4.30. I first had this compiled with 4.25 but then it worked perfectly on desktop computers, but not on my PDA.
The device I am using is a Dell Axim 51v with Windows Mobile 5. The Internet Explorer does not work with these JavaScripts Nettalk is using, but I run Opera and this browser does what I expect!
There is a login-screen, the browses have buttons the usual navigation buttons and also for VIEW record, CHANGE record and SEND an eMail with a PDF attachement.
If you like to test your device send me a PM and then we make an appointment so that you can access my server. If you have Skype running we could chat while testing, would be helpful....
bye
Wolfgang