- Go to Help -> Install New Software...
 - In the "Work with:" text box, enter: http://update.aptana.com/install/studio
 - Click Add...
 - Specify the Name of the Update site (i.e. Aptana Studio Plugin)
 - Click OK
 - Select the "Aptana Studio" checkbox
 - Click the Next Button
 - Confirm the items you are installing
 - Click the Next Button once more
 - Accept the terms and conditions
 - Click the Finish Button