Microsoft Live One Care denies Internet Access via Satellite

"This anti virus is too strong for your new Vista OS using wireless broadband satellite connectivity and it should not have been sold to you." This is what I was told from more than one computer technician, yet to our knowledge, no one else has had this particular problem before.
In good faith the computer store sold me the works (laptop & accessories), including their recommended anti virus program which was Microsoft Live One Care ($99.95).
Initially it worked for the first 3 - 4 hours and Internet accessibility was achieved. Emails and browsing were possible. The following day, when the laptop was booted up, NO emails, NO browsing activity whatsoever. The meter was ticking over, but that was all. After many painstaking hours of work at some monetary expense, we learn that the Microsoft Live One Care will not allow Internet traffic via the wireless broadband satellite Turbo card. Unplug the Turbo Card and plug in a broadband cable and Internet traffic is established. Reverse that procedure, unplug the cable and plug back in the satellite Turbo Card and traffic stops. Meter is ticking over, that is all. The Turbo Card was checked by the manager of our local new Telstra Shop and it was deemed to be "OK".
I think it's about time customers/consumers were alerted to this particular problem before anymore people get caught. We are unable to get a refund for the Microsoft Live One Care because 'technically' there is "nothing wrong with it". We now have to buy a different brand of Anti Virus and 'TREND MICRO INTERNET SECURITY' has been "guaranteed" to work by the retailer.
Sadly I am not convinced. I am very fearful that after spending more money on another anti virus, we will still end up where we are now, further out of pocket and unable to access the Internet via the wireless satellite Turbo card. We can't contact Microsoft until next week thanks to our long weekend holiday. Up until now no one thought to contact Microsoft before and we have had this problem for over 2 months, so a few more days won't hurt. "Professional" computer technicians have been trying to help. That is where the expense is. They charge big bucks.
If anyone has anything to tell me about this particular problem please don't hesitate. I feel like I am the only one in the world that has and still is suffering with this problem. Thanks. Von.