Hi,
check below URLs, hope they will help you:
http://www.symantec.com/business/support/index?page=content&id=TECH28403
http://www.symantec.com/business/support/index?page=content&id=TECH86448
http://www.symantec.com/business/support/index?page=content&id=HOWTO21785
Regards,
Abhi