It's good to see you here again! Just a comment re.
While that used to be true, DH disabled that choice when setting up a domain a while ago. Old (existing) domains that had been set up to run mod_php still have the ability to run that way (at least for now), but the "choice" is no longer available to new domains, and once a change is made from the panel to change the choice of PHP to use for a domain (there are now only choices for PHP4-CGI and PHP5-CGI), you can't change back to using mod_php.
That said, there is a workaround for running mod_php described on blog.dreamhosters.com that currently still works, allowing you to run PHP 4 as mod_php.