Techie help needed re Java mobile certificates

SMS Text News reader Daniel emailed me asking for the help of the ultra techie audience here on the site. Do you know much about certificates and Java for mobile? Perhaps you might be able to help. Here’s his enquiry:

Please help me with this enquiry. I’ve got a Java mobile application that i’m trying to distribute over the internet but whenever the users are trying to install the application and use it, a message keeps on appearing saying the application hasnt got a certificate.

Let me explain the process in downloading the application from the site. The users visit the site, completes the online registration form and by clicking on the download button, a txt file will be generated which will contain the user details, the JAR file which contains the application stored on the server gets extracted and recompiled again with the new txt file.

So whenever users try to activate the application on their phone, the information saved on txt file will be retrieved to authenticate them. Basically, the help i need now is identifiying which company i need to use to integrate the application with the security certificate as the way the application is download makes it a little bit complicated.

It’s definitely a complicated model that Daniel’s implemented. Any thoughts?