MEDIA PLAYER 10

I have recently downloaded WMP 10, to replace my
WMP 9......now I can’t open ANY video clips at all! The error message says to check my connection to the network, and check the settings.....I have no idea what the setting should be!! My network connection is fine while surfing the net, but I can’t play any video clips with any player (RealPlayer, WinAmp, WMP 10, Quicktime)
When someone sends me a video clip by e-mail, I can only play it if I save the video clip to my computer and then click 'play' on WMP 10. I want to view streaming live video, and I can’t at this point. I am running Windows XP (with firewall enabled) and have Norton Internet Security as well.
Any help would be appreciated!

ok jenny i also have the same problem.do one thing.download divx player and install xvid codecs.now u will be able to see movies
bye

I have exactly the same problem as jenny, can someone tell me.. step by step.. how to play my video files and radio on Media player??.. please i need an answer, and i need it fast..