CEAM, the original developer of PhpCollab, began exploring CMS integration at version 2.5 (XOOPS 2 and later PostNuke). He got an initial cut distributed in his first beta, and then abruptly stopped developing PhpCollab for some reason - something about working on another project.

The PhpCollab community is now in the process of transitioning from a one-man show to a community effort. A second beta of 2.5 has been released, but the CMS integration has been removed and the project team seems not to be interested in exploring CMS integration preferring to focus on other project management and collaborative management features.

http://phpcollab.sourceforge.net/viewtopic.php?t=900

Integration won't come from the PhpCollab community - they suggest you use a wrapper.

Tim Pascal