local security policies

Has anyone come across this problem, after upgrading a windows 98 computer to windows 2000
some of your local security policies changed. For example one computer after the upgrade would not let me install Roxio onto to it. It told me that the administrator setup an security policy that is preventing me from installing, but I am logged on as the administrator. Or the “Save Target As…” option is grayed out when trying to save an online doc.