Hi Mark
Welcome to the forum. For starters, follow these steps on the Opus screen:
Edit > Publication Properties > Security tab.
Check the Evaluation box to see the extensive range of evaluation methods you can use. I suggest that you also look at the Help files, and go to the Digital Workshop site, locate and download the Opus Manual -- you should find that useful.
You will get more accurate advice if you tell us what Opus product and version you are using. Also knowing your operating system and something about your hardware will help. If you open your Profile (top of the screen) and add this info to the Signature panel, it will appear on every post -- as it appears on many other posts.
Edit: You mention that you are making a DVD. I'm not sure whether the evaluations apply in the same way with DVDs as they do with CDs
I'd suggest that you might find an incomplete Guide I wrote some time back. It's free and available from
http://www.jeelan.com.au/transfers/OpusGuide.zip
I'm only leaving it on my web site until the end of this month, after which it will not be available.