Object Drawing Model / Merge Drawing Model

Recently I reinstalled Macromedia Flash 8, but then it was installed with the “Merge Drawing Model” instead of the “Object Drawing Model”. How do I change this?

I’ve tried to read this, but it doesn’t say exactly what to do;

http://livedocs.adobe.com/flash/8/main/wwhelp/wwhimpl/common/html/wwhelp.htm?context=LiveDocs_Parts&file=00000486.html

Thanks

-JPAG