See the defrag and scandisk troubleshooters located here:
http://home.satx.rr.com/badour/html/how_to.html

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Regards
Ron Badour, MS MVP W98 System
Tips: http://home.satx.rr.com/badour
Knowledge Base Info:
http://support.microsoft.com/default.aspx?pr=kbinfo
> Every time I try to perform scan disc,or de-frag I get the
> message: I have a windows program running, and for me to
> stop running the program. I can't find which program is
> running. HELP please Thanks