There's a complete README file included in the zip package.
On clean installs, just download the archive and unzip it in your vtiger root directory.
Unpacking the archive will overwrite existing files - previous changes would be lost. There's a patch version of this feature available on the forge -> http://forge.vtiger.com/projects/oo-merge/
Price
free
Product License
VPL
Vtiger Versions
Version 5.1
Company Information
Company Name
vtigersolutions
OpenOffice Merge Feature for vtiger 5.1.x - version 1.1 released on Dec 7th 2009