The third argument of the workbook SaveAs method is Password, so you can use
that to encrypt workbooks. See help for SaveAs.

--
Jim
"WhytheQ" wrote in message
...
| Is it possible to Encrypt an xlsx file using VBA?
| (I'm creating 50 or 60 files on the fly and attaching them to emails -
| manually adding passwords will be painful!)
|
| Any help much appreciated.
| Jason.