[Serusers] SER Question

Hello, I am a student in DCU University in Dublin, Ireland, and i was down loading the SIP Express Router onto a Sun Blade and i cant seem to permanently set the environment variable "SIP_DOMAIN" to my localhost. I use the followng commands in the terminal to set the variable SIP_DOMAIN to the localhost and it works but when i reboot the Sun Blade and type in "#echo ${SIP_DOMAIN}" i dont get back localhost. If you have any solutions to this problem, i would be delighted to hear of them. #SIP_DOMAIN=localhost #export SIP_DOMAIN #echo ${SIP_DOMAIN} Regards, Diarmuid.