How do I use a password to protect an Excel file from peeping eyes?

[Fat Cat]

Basically I finished my account tracker, but I would rahther use a password
to
prevent others from openning at all, I tried the Protect>>Protect workbook,
but
it doesn't work.

Thanks.

 

[Dave Peterson]

Do a file|SaveAs (you can use the same name).

Then on that dialog
Tools|General Options|provide a password to open
(xl2002 wording)

I think it was:
tools|Options
in earlier versions (but still under the file|saveas dialog)