[Tom Line]

That is a well known "fake" window that malicious sites pop up in web browsers in an attempt to get you to install malware.

More than likely, it was a result of the webpages you were visiting before chief delphi. However, it has been known to be triggered by malicious javascript code embedding in advertising banners.

I've never seen that originating from chief delphi, so as I suggested, I suspect it's from the websites you were visiting before coming here.