Well, for those interested here, this is a complete recipe:
1- On each workstation of your team, change the profile to a point source to a common "profile"
-> . \\server\share\commonProfile.ps1
2- On the shared profile, edit PSModulePath and add your sharedFolder containing your modules (we check if the allready shared folder is on the way)
if($env:PSModulePath -match "\\\\server\\share\\modules" -eq $false){ $env:PSModulePath = $env:PSModulePath + ";\\server\share\Modules" }
3 Place the modules created in \\ server \ share \ Modules and import them from commonProfile.
Additionally:
Use SVN or so to update your modules folder
Use Redmine to track your developments and bugs.
Automatically create documents so that your colleagues know what you are doing (I use a modified version of the Out-Html script found at poshcode.org

Finally, Just Relax;)
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