I want my macro to save a workbook called "accounts.xls", however I
may already have run the macro in which case I wish to over-write the
existing workbook.

If the file has already been saved under that name, the following
Excel dialogue box appears:

"do you wish to over-write the existing file?" in which I have to
click "YES"

I want the macro to find out whether a file called "accounts.xls"
already exists and, if so, delete it, so that the macro can save it
without the need for this Excel prompt box to appear.

Any ideas?

Thanks.

Ian M