From your e-mail, I understand that you are looking for Ehternet card drivers for your HP Pavilion dv6258se Notebook.
I have refered your notebook specifications and the Ethernet card bundled with your notebook is Integrated 10/100BASE-T Ethernet. I am providing you a URL where you can download drivers for the Ethernet card. Please download the drivers from below URL:
NOTE: The link starts from "ftp" and ends with "exe". Clicking on the link may not open the web page. Copy the link and Paste it in the Internet Explorer address bar and Press Enter.
1. Download the SoftPaq .EXE file to a directory on your hard drive.
2. Execute the downloaded file and follow the on-screen instructions.
This should resolve your issue. If you need further assistance, please reply to this message and we will be happy to assist you further.