Can not delete Excel Style
 

An Excel 2003 SP1 spreadsheet has a Style in it named
=C:\WINNT35\SYSTEM32\COMMAND.COM. This Style is can not be deleted. If you
unlock the spreadsheet you can delete the Style. Open and close the
spreadsheet and this Style returns. This happens on any computer the
workbook is opened from. This spreadsheet has existed through many
generations of Excel. This Style is preventing the spreadsheet from being
published to a website...something that was not previously done. How do I
delete this style and where does it come from?