I monitor the system files in "sysedit" such as system.ini, win.ini by copying them in a folder monthly and using DOS "fc" to compare changes. Is this being too obsessive, any better ways? I've noted that system.dat and user.dat can keep the SAME size but they can change internally. How does one monitor them; "fc" gives non-ascii junk. Call me nutty but once I noted 3 hidden files had suddenly disappeared and I get depressed over this -- regularly using chkdsk to monitor them. I hadn't un/installed anything recently.