Error when getting rss feed in flash

I am pretty new to flash. This error is seriously bugging the hell out of me though. I manage my school's website and am trying to make a flash rss feed. Its Actionscript 3.0 and Flash player 9. The only fixes for the error shown in the image is editing the flash player settings for each computer that views it so it can access the internet which is bull****. I want to know if there is something I can do except waste my time to get this running on the site. Thanks and pardon my french..

- Austin Y.