Hmmm OK, I did that, then it said permission was denied, oops! So I set the permissions to 777. Now the e-mail that comes says this:

/home/dburgi2/public_html/currency_update.php: line 1: ?php: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 2: /*: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 3: //Currency: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 4: //developed: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 5: //donations: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 6: //via: No such file or directory
/home/dburgi2/public_html/currency_update.php: line 7: syntax error near unexpected token `('
/home/dburgi2/public_html/currency_update.php: line 7: `//every little bit helps - why donate (http://www.modyourzencart.com/free-of-charge/why-donate)'

And the currencies aren't updating.