Hello,
Please check Ashish comments in below article.
https://www-secure.symantec.com/connect/forums/altiris-installation-problem
https://www-secure.symantec.com/connect/articles/readyaltiris-client-management-suite-7-install
Please mark thread as a solution if your issue is resolved or let us know if any help required?
Try this: http://www.symantec.com/business/support/index?page=content&id=TECH195731