The BibleWorks 7 disk set contains either a single DVD or multiple CDs, 5 or 6 of which are labeled "Program Disk" followed by a number.
Each disk set, whether CDs or DVD, includes a CD labeled Module Disk. This CD contains the files for optional, add-on modules, and the setup program for installing them to the computer.
The Setup for the Module Disk does not need to be run unless one has purchased unlock codes for modules contained on that CD. If the setup program is run, and the files installed, then BibleWorks will prompt for unlock codes every time the program is started until either the modules are unlocked or the setting is changed that causes the program to so prompt. (See the FAQ below, Why Am I Prompted for Unlock Codes When BibleWorks Starts?)
