I have downloaded and installed MySQL 6 for use with PHP,
I have been advised to configure MySQL with no root u/n or p/w, instead, that I should locate the file "my.ini" in the MySQL directory, open it in Notepad and scroll down to the end, new line, and type "old-passwords".
However, when I try to save this then (using Vista), I get the message:

Cannot create the file C://Program Files/.....my.ini file.
Make sure the path and the file name are correct.

Can anyone help me with this?