Original from: wireless-driver.com, Post on: 2007-07-12

1. Navigate to Start籆ontrol Panel籗ystem and Maintenance籗ystem籇evice Manager籈xpand Network Adapters and Other Devices in the right pane.
   You should notice the wireless adapter is not present and the network controller has an exclamation point icon indicating there are no drivers. You will not be able to use your adapter even though it is physically on your system.
2. Right-click Network Controller and click Update Driver Software in the computer management window, as shown in image below.
   
   
   
   
3. Click 'Search automatically for updated driver software' if you have a direct connection to the Internet. Otherwise, click 'Browse my computer for driver software.' We will use the second option for this example.
   
   
   
   
4. Browse for the location to which you saved your driver file(s) and click Next.
   
   
   
   
5. The system begins the installation process.
   
   
   
   
6. The installation is successful. Click Close.
   
   
   
   
7. Return to the Driver tab and notice the Driver Version is 11.1.0.71.
   
   
   
   
   
8. If the wireless adapter fails after updating the driver, try the process again. You will not be able to roll back to a previous version because one does not exist.

Alternative Driver Install Method:

The preceding driver install method is preferred. However, you may automate the process if you have a driver package from your computer manufacturer or Intel's Support Web site (generic version not recommended).

1. Open the Driver folder on your computer.
2. Double-click the iProdifx icon and wait for installation to complete.
   
   
   
   
3. The driver version is 11.1.0.71.
   
   

Operating System:
Windows Vista* Starter, 32-bit version, Windows Vista* Home Basic, 32-bit version, Windows Vista* Home Premium, 32-bit version, Windows Vista* Business, 32-bit version, Windows Vista* Enterprise, 32-bit version, Windows Vista* Ultimate, 32-bit version, Windows Vista* Home Basic, 64-bit version, Windows Vista* Home Premium, 64-bit version, Windows Vista* Business, 64-bit version, Windows Vista* Enterprise, 64-bit version, Windows Vista* Ultimate, 64-bit version

This applies to:Intel®PRO/Wireless 2100 Network Connection
Intel®PRO/Wireless 2200BG Network Connection
Intel®PRO/Wireless 2915ABG Network Connection
Intel®PRO/Wireless 3945ABG Network Connection
Intel®Wireless WiFi Link 4965AGN