I haven't used Ziphone, but I think that it adds the Installer icon automatically to your home screen. From there, you should be able see and install tons of great applications. You might have to add sources (web addresses for the installer to look for applications) to find particular applications that might not automatically show up on Installer. There is a button on the bottom right of Installer to add the sources you might need.
I'm not sure what the particular source is for MMS or whether it is one of the default apps in the Installer...maybe someone else can chime in or you can find the source to add to Installer with a google search.
thanks for that
i updated sources but it said i have an update to do,is it ok to riun this i ask myself
also the applications show on the page but how do i open them,not too sure,if i need to go online to do it i guess best do it via wifi connection or i will get billed.