Acer make a larger quantity of PCs and Notebooks which run Windows Vista, and drivers should be provided on CD for the default hardware installation. However, if you lose this CD or wish to update your drivers you can download them direct from the Acer website.
To do so, visit the Acer Driver download section:
Then, select your location from the drop-down list. You will then be prompted by the type of download, so select "Drivers".
This will take you to a page displaying all of the hardware ranges that Acer produce. Click on the drop-down box displaying your hardware type and select the model number, taking you to the correct driver download page.