Image magick

I would like to connect my drupal image module to the pre-installed imagemagick software on dreamhost. Dreamhost says that the directory is usr/bins/convert.exe, and that I need to install a script. Since I am a relative beginner, can someone clarify for me what the directory refers to? Is that mydomain/usr/bins? or And how/where do I install the appropriate script. The information on the kbase seems rather brief, or perhaps I am looking in the wrong place.