There are a few basic things to look for under the Control Panel in the Network settings. 1.IP Address, should be Obtain IP address automatically.
Address needs to be empty.
The next place to check the settings is the Dial-Up Networking Folder, under My Computer. First either right mouse click on the abcisp icon to get to the Properties, or a single click and then go to the FILE menu to get to the properties. Under the Properties click on the Server Type button. Then, make sure that you have Server Assigned IP Address and Specify Name Server Addresses. In the primary and secondary DNS fields you need to enter our DNS numbers.