Internet Connection

My computer is connected to the company intranet account and connects to the outside world through the intranet.

DraftSight does not recognise the internet connection at all and says activation server not available, check yout internet connection. This is strange as I have a number of other programs that sit quite happily on the computer and can find there way out onto the web with no requirement to set them up.

DraftSight gives an opportunity to edit the settings for no proxy, HTTP etc etc but none appear to work.

Any ideas ??