I tried installing that from the support.dell.com but it does not work.
The drivers provided on support.dell.com should work properly if you have Windows XP or Windows Vista 32-bit installed on the Inspiron 1525 laptop. To provide an appropriate driver for the computer, we need additional system information:
1. Version of Windows installed (E.g. Windows XP Professional):
2. Do you need the drivers for the Ethernet controller or the wireless network card?
3. Any error message received while installing the downloaded driver:
Please reply to this message with the requested information.