OSGeo-Live development is coordinated via email and internet chat (IRC) as detailed on the OSGeo Wiki.
If you have any questions, comments, or run into any problems, please drop us a note on our mailing list.
IRC users might try the #osgeolive or #osgeo channel at Freenode.net for real-time assistance.
LISAsoft provide commercial support for the building of the Live DVD, as well as many of the applications packaged in it. Details at: http://lisasoft.com
Most packaged applications have both community and commercial support offerings for them. Refer to specific application descriptions linked from the Contents for details.
In addition, there are a large number of consultancy firms world wide who provide support for OSGeo member projects. See http://www.osgeo.org/search_profile for one that meets your needs.