First of all, you need to learn to use Google to find drivers. I found a Vista driver from Gateway in less that one minute at the following location:
http://www.driverzone.com/device.php...67&show_devs=a
Second, check to see if you can uninstall the Windows Update. Open Windows Update, View History, click Installed Updates. Try removing the updates one by one. That may restore your drivers, but my guess is that it will not.
Third, turn off automatic updates in Windows update. Only have it check and/or download. That way, you have a chance to examine the details on each one before you install it.
Finally, if none of this works, contact Gateway and see what kind of support they offer. Surely, the machine being only a few days old, they must offer some kind of warrantly program to restore your machine.