Have you tried any of these? http://www.hotscripts.com/PHP/Scripts_and_Programs/Tests_and_Quizzes/index.html
yes moodle is a great script. but they use a javascript to validate answers. so any one can view answers just by looking at the source code. you can not do this in IE or mozilla.. but works fine with opera..
Moodle is is a Course Management System (CMS). It is a Free web application that educators can use to create effective online learning sites. Fortunately, Moodle already has a Quiz module allowing the instructors to design and set quizzes consisting of a large variety of Question types in the easiest way. With this module, creating a simple quiz is just a two-step process. Howerver, Moodle may not support some advanced applications such as importing audio, customizing background or collecting results. For instructors, if you want to build the assessments with multimedia, as well as results tracking and reporting. Flash quiz is the perfect solution with multimedia authoring. A number of tools could help you make Flash quiz, such as Wondershare QuizCreator. With SCORM/AICC module in Moodle which allows you to upload any standard SCORM package, you can easily create and incorporate a SCROM compliant Flash quiz in your course.