Domain Renewal Help

Hello, Kindly help me to renew my domain as our system administrator is not around to help. I want to renew the domain name ushirika.co.tz which must be done in fred-client installed in linux OS. I can SSH the server with login credentials correct and I have the su password but in both place su or the first one when I put DIR command I find there is Desktop and fred-client.conf I don't know what to do next. Help please. Michael Erick | ISP Network Engineer | |Benson Informatics Limited, P.O.Box 78914, Plot No.13, Mikocheni A2, Warioba Area, Dar-es-Salaam. | <Tel:+255> Tel: +255 222 666 670 Fax:+255 222 666 471 |Mob: +255 798 020 022, +255 797 255 727 |E-Mail: <mailto:michaele@bol.co.tz%7CWeb> michaele(a)bol.co.tz |Web: <http://www.bolmobile.co.tz/> www.bolmobile.co.tz