Unable to configure Proxy

Hi,

I'm on a mac and tried configuring Safari, Firefox, and Opera in accordance with the instructions here

http://community.screen-scraper.com/configuring_firefox

and in the other browser-specific guides.

I get a proxy error each time and don't have the specific error on me right now, because my account here just got activated and I tried screen-scraper out just over a month ago.

Still, I am very interested in screen scraping, and would love to give it a shot. I know it might be tough without the specific error, but it was basically, I configured the proxy as shown, and then I could not browse at all anymore (no websites).

Maybe that's enough for some wise folks to point me to the next step.

Best!
Dainis