Open your Start menu and click on 'Control Panel'.
Select "Network and Internet' and then 'Network and Sharing Center'.
Click 'Set up a new connection or network'.
A pop-up window will appear, select 'Connect to the internet' and then 'Dial-up'.
If you are given the option, next choose the 'Vodafone Mobile Broadband Modem (Huawei)'.
Next enter the connection details as follows:
Phone number: *99#
Username/Password: Leave this field blank
Connection Name: Choose something recognisable e.g. 'Vodafone MBB dial-up connection'
Then click 'Connect'.
You will see a connection progress bar followed by a conformation message.
Select 'Browse the Internet now' to begin using your Vodafone mobile broadband service.