Typically, the process accounting information is only accessible by the root user on a system, due to the potential misuse of the information by "illicit" users. It seems that the systems here on dreamhost are set up like that.
Unless you were getting hit by an insane amount of people (a la slashdoting/digged), I wouldn't really worry about the CPU time that you used. This is especially true if you're using something that's made to handle lots of simultaneous users like drupal, PunBB, or any of the other free and open-source systems you could use to build your site off of.
If you're truly worried about getting files leached off of you but don't want to worry about access restrictions (e.g.: pictures getting leached, etc.), then I'd reccomend that you look into simply setting up a .htaccess file in the directory containing the files you don't want leeched.