Internet access not working (by 2 users)

employee organizer using quickbook pro 2008 keeps coming up can not access internet connections then says try these suggestions. After trying everything suggested I still can not use the program. Have contacted Intuit two different days but they could not resolve the problem. One day we spent over nine hours on the phone and still no results. Had computer tech come to office and he talked to intuit quickbooks service tech and still no results. Important information needs to be accessed can anyone HELP?