Get My First Appplication on my Nexus One Phone

I have Java, Eclipse and the Android SDK installed.  Also the computer is seeing my phone.

Working from the following link:

http://developer.android.com/resources/tutorials/hello-world.html

Everything seemed fine till I got to the point to look at the code.  The code window doesn't show up.  I have seen it before, but I don't remember what I did.

Had to double click on the HelloAndroid.java name in the tree HelloAndroid ==> src ==> com.example.helloandroid ==> HelloAndroid.java

Now I am unable to edit the code.  Now I can edit the file.  I am now sure what changed.  Was it just way behind?  Don't thing so, other options where working.

My old portable my not be powerful enough to run Eclipse.

Running the app ran it on my HTC that was connected.