|I'm running an older version, but I'll try telling you what to do.|
On the left side of the screen under 'options' look for 'Virtual Drive' and click it. You should get another window with a 'Number of virtual drives'. Select the number of virtual drives you need. I guess it will be four. You probably want to select 'Remount images on system reboot'. Click OK and wait for the drives to be setup.
You should see four drives added to My Computer.
Now you need to make images of your four CDs to mount on the drives. On the left side of the screen under 'Main' there is 'Image Making Wizard'. Click on it, select a CD and proceed to make an image of each one on the hard drive. Put them together, maybe in a new folder in your genealogy folder.
Now to mount the Images, right click one of the virtual drives in My Computer, select 'Mount Image' and browse to one of the images that you made and select it.
If my instructions leave a little to be desired try the Help option on the Toolbar.
The three most important things in computing:
1. Backups, 2. Backups and 3. Backups.