http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=321865&lang=en&cc=us&prodTypeId=12454&prodSeriesId=321863&taskId=135
Select your operating system (Home Edition or Professional)
Since you have access to the internet, download the drivers you need and save them to a CD or Flash drive. Then, you can move the CD or Flash Drive to your HP computer to be uploaded and installed.
If you need more directions, please ask.