You can download this app from its Google Code project page at:
The install was painless to me. Just follow the dialogs and it configures itself automatically. It just places an icon available from the Start button to uninstall it. Other than that it seems to work automagically. ;)
Screenshots are included below:
1. You load a document on AOO 4.0 and click on File-Send-Send document as E-Mail
the new UGLY GMail COMPOSE WINDOW this is what you will see.
A SPECIAL NOTE ABOUT SECURITY:
This APP, AS ANY INTEMEDIARY APP, REQUESTS YOUR GOOGLE ACOUNT CREDENTIALS, AND OFERS TO SAVE THE DATA SO YOU ARE NOT PROMPTED EVERY TIME. THIS COULD BE A SECURITY CONCERN FOR SOME.
I hope this helps people wishing to integrate Apache Open Office with GMail.