random question generation

I am building an application that has course material and one of the requirments is that questions related to course material pop up randomly in relation to the question bank and to time. So if there are 15 pages in a section and four questions need to populate somewhere after page 1 before the end of the section what would you guys use to do this. The questions and answers will be in a database. Also a question on page 4 can't be asked on page 1. The questions will not pop up like a javascript event but lay seeded between the pages it will either happen based on randomization or not. Anybody been down this road before? Frank __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/