I re-installed Windows 7.0 prof. on a Dell Vostro 260 i3 PC. Unfortunately I neglected to check the drivers for the machine in device manager before I installed Windows. Now I have a problem to determine which of the eight possible display drivers on the Dell support site to install. I tried three according to specifications for these machines that I found on-line, however, none of the three works.

How can I identify what on-board display card is in the machine and which driver I should install? Currently only the generic Windows VGA driver is installed which is useless for the particular monitor that I'm using. Unfortunately I cannot go on-line with the affected machine since I only have a WiFi connection and the machine is not Wi-Fi enabled.