pls tel me that how i can activate the window live one care system
If you are reinstalling One Care select the purchase or subscribe button and when asked for a Live ID enter the Live ID and password associated with your existing account. If you are installing from a newly purchased cd see this post - http://social.microsoft.com/Forums/en-US/onecaregeneral/thread/81996436-edad-41ba-bdfc-02fc094e2ca9
Jim
i didn't understand that what u have sais