launching installed(like picasa,skype) app which are on my emulator home screen,from within my app(android)

i want to launch picas app which i have downloaded on my emulator, from my application.. i googled a lot but got only how to upload images on picasa.. i need to launch the whole stand alone application picasa from my application using some intents and/or some API's..

i want to know is this possible or not...if this is possi开发者_StackOverflow社区ble i can very well launch almost all downloaded applications from my application....

I think you had asked that before: how to launch picasa from my app(android)

So again: get the package name of the app and launch it with the method described.