The first step would be to click start, right click "My Computer" and select properties.
On the window that pops up, select the hardware tab, and then select "Device Manager"
Right click the device you need to install and select properties
The details tab will show you what your hardware device ID is, which you can
enter into a search engine or browse to directly at
In the example here, you would be looking for PCI VEN_10DE DEV_00D9 SUBSYS_006D103C
Typically the rest can be ignored (occasionally you may want to look for the Revision as well
(The example above shows a revision of REV_A2)