Visit dell.com ---> Support ---> Product Support
Enter your Dell service tag# (from the label on the back of the notebook)
Then select Drivers & Downloads. Then you will see all the drivers available.
Make sure to install the Install the Intel HM67 Express Chipset drivers first and the wireless drivers.
Sometimes this order of installation is important.
You seem to have a wireless N1030 installed. If you post your Service Tag may be we could help you better.