Here are the instructions on how to communicate with Amazon's API to export a VM from Amazon EC2 to a VMware image that gets put into S3 storage.  From that point, you can simply download the VMware image and import it into your VMware environment.

0. Open up a command prompt

1. Setup your java path (you can use JRE or JDK):
set JAVA_HOME="C:\Program Files\Java\jre6"

2. Verify your version with this command (you should see the java version number):
%JAVA_HOME%\bin\java -version

3. Add the bin directory that contains the java executable to your path before other versions of java
set PATH=%java_home%\bin;"%Path%"

4. Verify you can see the java version by executing the following command:
java -version

5. Set the EC2_HOME path
SET EC2_HOME=c:\ec2-api-tools-1.6.5.4

6. Verify the ec2_home using
dir %EC2_HOME%

7. Update the path
set PATH="%PATH%";%EC2_HOME%\bin

8. Setup access key environment variables
set AWS_ACCESS_KEY=XXXXXXXXXXXXXXXXXX
set AWS_SECRET_KEY=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

9. Verify the tools setup -- if setup correctly, we should be able to view our available regions.
ec2-describe-regions

10. Execute the following command:
ec2-create-instance-export-task i-EC2INSTANCENAME -e VMware -f VMDK -c ova -b S3STORAGEBUCKET

Once you have executed the command above, you can use the following commands to track/manage the cloning process.

• Use ec2-describe-export-tasks to monitor the export progress
• Use ec2-cancel-export-task to cancel an export task prior to completion

 

Notes: You could easily take steps 1-8 to setup an automated script to connect to amazon's services.  If you would like more information on these steps, here was a great article I ran across explaining everything in detail.

http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/SettingUp_CommandLine.html