[H-GEN] how do I get microsoft small business server working within iceweasel?

[remoray]

Hi guys,

I've got debian with iceweasel, and I want to connect to microsoft small 
business server, so I can access the email account of a volunteer 
institution I am a member of.

When I first tried it, I was told I had to create an exception for the 
website, which I did.

Then I just get the message;

"Cannot connect to the Remote Web Workplace site. To continue, contact 
your network administrator."

So, I'm a bit stuck.

I know that when I do this at work (windows xp and IE 6) a new browser 
window is created. But at home (debian iceweasel) no new window or tab 
is created.

Thanks!
nick