Attached Link: http://market.renderosity.com/mod/bcs/index.php?ViewProduct=47006&vendor=coflek-gnorg

There's the [ *coflek-gnorg*](http://market.renderosity.com/mod/bcs/index.php?vendor=coflek-gnorg) Briefing Room Construction Kit that includes a hologram sphere.

ContentParadise has a briefing table with what appears to be a postworked hologram.
http://www.contentparadise.com/us/user/mythical_furniture_briefing_table_product_42429

DAZ has a holographic setup at
http://www.daz3d.com/i.x/shop/itemdetails/-/?item=2224&_m=d

You might wnat to look at the sticky for Material Room, Nodes & Shaders - Tutorials and Discussions (Bookmarks - Updated)
The ghost effect can be used to create holograms. The other option is using post processing techniques in an image editor to create holograms.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon