Hi Bob, thanks for the kind offer. Before we embark on more work, the following for clarification.

The dust cover is from Alluna, just as in Peter Brackenridge's case, and working command lines exist as .bat files. They work fine.

Thee is also script code how to call on the command lines, like:

Util.ShellExec("C:\\Public\\Documents\\ACP Config\\Scheduler\\OpenDustCover.bat");
Util.WaitForMilliseconds(10000);

My question is where do I put these command lines, or do I now now separate startup/closedown scripts?

Grateful for help,
Roelof