i think this may help you little bit.
go to Windows
>Preferences
>Select General
>Editor
>Keys
page. Here the settings will be to configure your own hot key using plug-in org.eclipse.ui.commands
.First, you need to define your new configuration
<keyConfiguration
name="My Configuration"
parent="org.eclipse.ui.defaultAcceleratorConfiguration"
description="This is a simple configuration"
id="org.eclipse.faq.sampleConfiguration">
</keyConfiguration>
the below tutorial may help you clearly.. http://www.vogella.com/articles/EclipseCommandsKeybindings/article.html