JBoss jBPM Graphical Process Designer Installation

[minakari]

I want to install JBoss jBPM Graphical Process Designer so I downloaded jbpm-gpd-site-3.0.12.zip I did these steps in Eclipse3.3 Help>>Software Upadtes>>find and install >>search for new features for install>>update site to visit>>New Archive sSite then I selected jbpm-gpd-site-3.0.12.zip from my harddrive but when I click finish this error occur:

"No features found in the selected site(s) .choose a diffrent site or site category"

[koen.aers]

Please use the version 3.1.2 feature zip file. Installation is as simple as extracting the zip file.

Regards,
Koen