This application will push out text messages to phones from a PC. The same concept could be used to develop an XML app to push messages between phones. You can download a trial version of the applicatin at the link above.
There are other products, such as Berbee's Informacast, that can push text messages out to phones as well.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.