[xwiki-users] about xwiki install and configuration

Hi people, i m very newbee with xwiki, my client is very interested on using this tool but i need to know which is an optimal configuration site, jdk?, which aplication server (tomcat 5.5?), Oracle, postgresql,mysql?, how many GBs do i need for database hdd, Ram? Its optimal to use the VmWare appliance supplied here? http://www.vmware.com/appliances/directory/97683 Someone has used this in production mode? Sorry for my poor english. -- Alonso Isidoro Roman. "La maquinaria de la corrupción se engrasa a diario con el sudor del trabajador conformista" Aristóteles.