Windows 2000

Office XP.

When opening several xls files only one shows on taskbar.

Tools, Options, View, Select or clear the Windows in taskbar check box.

Have used the above. Sometimes they show and sometimes they do not.

Have another computer with same Windows 2000, Office XP and all xls files
show on task bar when above is checked.

On the computer that is not working .... Word windows all show on the task
bar.

Any suggestions what might be happening????

Thanks..