Crystal Reports print control Active X install

Hi,

Does anyone know if admin rights are needed when installing the ActiveX component of the print control? I have seem workstations that can and cannot install it with and without admin rights. Therefore, I want to know if anyone knows for sure whether admin rights is needed. Also, a lot of times the user opts to install it, but it never did. So if it is not related to rights issue, what could cause ActiveX to not install?

Crystal Reports 2008, BusinessObjects XI 3.1

thanks!