I'm about to upgrade from 6.3.1 to 6.4.2. Will the easiest method be moving all files from 6.4.2 to the forums directory on my server (except main.inc.php, config.inc.php and theme.inc.php)???

Would the Unix command look like:
Code
cp -Rp [my 6.4.2 upgrade directory] [my current forums directory]