Are yiu behind firewall or proxy?

>Hi,
>I read a very interesting article in Aug 2001 Advisor by Andrew McNeill on using Netmeeting as a support tool.
>
>I ran Netmeeting up bu cant get past the first screen.
>A message:
>'There was a problem connectting to the Directory Server' pops up no matter which Server I select (e.g. ils.microsoft.com, ils1.microsoft.com etc)
>
>I'm sure there is a fairly simple solution bu I cannot figure it out or get any further.
>
>Any help appreciated.
>
>Regards,
>
>Gerard