abhisnekmy,
Thank you for visiting the OneCare program forums.
What error message are you receiving? Error messages may come in the form of four digits, a dash and
eight digits that follow and will help us to give you the correct resolution.
For Installation issues, please visit this Microsoft online KB article on How to troubleshoot installation issues for
OneCare:
http://support.microsoft.com/kb/943906/en-us
I hope this helps,
Lori MS