Ah! Finally found the delete button. I have to edit the first post to do that, though. But now this thread contains some useful tips about how to delete a thread. I might better keep it here.
Now, where's the 'close' option?
And yes, I was amazed that the overlay turned up on the screenshot. Normally it would just be a black area with my old Paint Shop Pro 8. But I upgraded to (Corel) Paint Shop Pro X and must say that it's working a lot nicer.