Many thanks for help Bill.
My default browser is IE, but I keep Firefox as a standby for this kind of dodge..
I've installed the Download Helper add on, and while trying to work out how to use it
I got this sad mesage

"Sorry
Channel4.com currently only supports Windows PCs using Internet Explorer 6 or 7. This is due to restrictions with the rights and technical protection measures required.
However, if you are using Firefox 2+ (on a Windows PC) you can get a plugin from here
[http://port25.technet.com/pages/windows-media-player-firefox-plugin-download.aspx ] which should allow you to watch the programmes on Channel4.com."

oh well.. any other suggestions...........

cheers...