one important thing tho:
The zenphoto one click install from dreamhost is 'simple' only. DON'T USE IT.
Download from the zenphoto website and install in your own directory.
Otherwise you won't have access to your /albums folder and you will want/need that. Plus you can't really customize the theme.
just follow the standard install instructions on the zenphoto website. Zenphoto used to be harder to install on dreamhost but it's not anymore, you can follow the standard install instructions.