I've changed the ports, but I still get an error message about port binding. Why?

When it comes down to it there has got to be some other program preventing screen-scraper from bidning. Such as:

McAfee anti-Virus (or some other flavor of software)
Zone Alarm and other internet traffic monitors.

These programs are fine to run while running screen-scraper as long as screen-scraper is added to the white list. Most of these programs are going to hold a list of applications which are allowed to make outward calls to the internet and screen-scraper needs to be added.