Android Application: Replacement Launcher Application.

Hi, We need an application which will act as a Launcher replacement for Android 2.2 / 2.3 OS. This application will simply be a WebView of a PHP site. The Application will need to be able to send HTTP messages via POST and GET and also launch other application based on POST / GET message resposnes from the server. Ideally we need this application to lock down much of the Android OS and limit things like ability to start other applications and or access media from the user interface. But we need to still be able to launch applications like media player and Web Browser and start and stop services like Wifi Tethering. The final application is intended for an embedded device which runs Android the device is not a phone.