Windows 2000 server problems

[agent589]

Hey everyone i have a question that could pick your brain. i have a windows 2000 server going with IIS installed and everything, i can get to my FTP site fine but i cant connect to my HTTP or get it to open. i have a linksys router, port 80 is open but it still says that "Page cannot be displayed" any one have any ideas. i know i sound like a n00b but any help would be good help thanks.