I have been reading old posts on here about it, all of them mention how GPUGrid was planned to be included in future updates of GridRepublic but I am not seeing it listed. Instead, PS3Grid is listed, which is an extremely old listing for the original name of the project. Evidentally they have been planning to change this on GR and update since... 2010? I tried connecting with PS3Grid and it did not work. Maybe because my user account email/password on GPUGrid does not match that of GR? Is GPUGrid not supported in its current form by GridRepublic?
http://www.gridrepublic.org/joomla/index.php?option=com_smf&Itemid=26&topic=170.msg630#msg630
http://www.gridrepublic.org/joomla/index.php?option=com_smf&Itemid=26&topic=158.0
http://www.gridrepublic.org/joomla/index.php?option=com_smf&Itemid=26&topic=232.msg853#new
