1 - put the 3G key: Do not start the automatic installation when the key is inserted.
3 - install the Orange app located here:\SuiteSetup\Internet DMFGP.exe BESS(Follow the procedure given by Orange to install)
4 - Restart the PC
2 - install the software from the Huawei E160E Mobile Partner: DataCard_setup64.exe
5 - Run the application "Internet Everywhere" => the modem drivers are installed automatically for the key. It is possible that dirvers are slow to be detected by Vista. Leave the key in place 5-10 minutes.
6- Once this procedure is over, you should be able to connect to th internet.