Keep that Windows 7 install DVD in a safe place. It can be really useful, to repair a PC or to backup files (and of course to reinstall Windows if needed).
You should have most drivers already installed. You can check that with "Device Manager", search that in the Start Menu. In Device Manager, look for any device with yellow triangles, and check, under Display Adapters, if the graphics driver for your card is installed (nVidia, ATI, Intel, etc...), or if it is using a generic driver.
If a device needs a driver (or if you are using the generic graphics) just right-click on it and select "Update Driver Software...". On the next window select "Search automatically for updated driver software". If it finds a driver then you are ready with that device. If it does not find a driver, repeat and select "Browse my computer for driver software". Insert your recovery disk, and select it as the place to search. Select "Include subfolders". If the disk contains the drivers they will be installed.
Otherwise, you will need to download them manually from here:
In this case you will probably need to run the downloaded installer to install the driver.