You can also make shortcuts on your desktop to the PSY files so that you can launch the screen saver with different settings just by clicking on the shortcut. For this reason, the effects module will produce the best results when it is used with one of the other modules. As you've noticed, I have provided documentation for everything but the module controls. The best way to discover what the module controls do is to experiment with them. Fortunately there are 16 bit versions that should work just fine on your system.
Strength only has an effect when there is more than one module selected.
At this point, SS Runner has been removed from your taskbar and will no longer be run when your system is started. My policy on upgrades is that, by registering a particular version, you are entitled to use any and all versions up to but not including the next major version. For example, if you register version 2.1 you are automatically registered for all 1.x and 2.x versions but not for 3.x versions. Basically, you get updates to the version you registered and a discount to upgrade to a new version if there is an upgrade fee. This problem is probably due either to a problem in your video driver or to the way the driver is configured.