windows security stopping my modem driver from loading

Hi,
I installed a modem in my dell 410 and downloaded the vista drivers from
usRobotics. At start up, window security blocks the exe. programs from
loading until I okay them to run. Vista does this eveytime at start-up. Does
anyone know how identify these to windows security as being okay?
Also, after I get by windows security, user acct. control stops the drivers
from loading and asks for the admin. to okay the drivers loading. How can I
get the modem drivers to load without all the hassle.

Thanks,
Terry