Step 1:

Download Flex SDK 3.4 to your computer.

Step 2:

Extract to c:\flex_sdk_3.4

Step 3:

Browse to C:\flex_sdk_3.4\runtimes\player\10\win and run:

Install Flash Player 10 ActiveX.exe

Install Flash Player 10 Plugin.exe

Step 4:

Browse to C:\flex_sdk_3.4\samples\explorer

Step 5:

Run build.bat

This will take a while because it will recursively compile all mxml files.

Step 6:

Run explorer.html

Experiment with the samples provided.

Step 7:

Let’s create an hello world application. Using an editor of your choice create a text file and save it as “helloworld.mxml” – the directory doesn’t really matter but let’s say c:\helloworld\.

Step 8:

Copy the following xml text into the helloworld.mxml file.

<?xml version=”1.0″ encoding=”utf-8″?>
<mx:Application xmlns:mx=”http://www.adobe.com /2006/mxml”>
<mx:HBox>
<mx:Label text=”Hello World from Flex!”/>
</mx:HBox>
</mx:Application>

Step 9:

Compile your mxml file into an swf file using the following command at the command prompt:

C:\flex_sdk_3.4\bin\mxmlc.exe helloworld.mxml

Step 10:

Run your swf file. The Flash player should open and execute your file. Your “Hello World from Flex” message will show up.

References:

http://livedocs.adobe.com/flex/3/html/

http://www.adobe.com/support/documentation/en/flex/