Tab problems in Android/Eclipse - java

I am new to android development/eclipse and have run into a problem. I have 3 working apps that I programmed that work by themselves. One of these is a app that simply displays 2 tabs that when clicked don't really do anything. What I need to do is integrate my three programs together so that when you click on the tabs they start the other 2 apps. My biggest problem right now is the layout. I have them all together and compiled with no errors, but when I run it everything is displayed with the tabs and its a mess. My question is, how can I make it so that only the right stuff displays only when a tab is clicked. My xml file is a jumbled mess with like three different LinearLayouts. I am so new I don't know where to start. Any help would be greatly appreciated!
Brian

What is displayed on the screen at one time is called an Activity. Looks like you want 3 activities, but what you have is only one Main Activity. You should display the 2 tabs on the Main Activity and then use an Intent to change between activities, when you press on the tabs.
For a reference, you can refer to the android developer site: http://developer.android.com/training/basics/firstapp/starting-activity.html
I hope this helps!

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