Internet dongle, Internet sharing and NIS 4

Hi all,

 

Vacations finally started and I brought my MBP with me to occasionally check my emails. To do this, I purchased a Nokia Internet Dongle (3.5 G). On my MBP there's also NIS 4 installed, with the latest updates. I'd like to share this connection to the other toys I've with me, such as my iPhone 3G, and so I was wondering to use the Internet sharing built-in feature in MacOS, but it looks like that checkbox, within system preferences/sharing, is greyed, most likely because of a NIS 4 setting. Does anyone have any idea how to re-enable it?

 

Thanks in advance.

 

Ciao,

 

Marco