Set IE setting for all clients

Hi,
I am getting started in Netwrok Admin and I am trying to configure all the IE on each cleit with a script (batch file). The problem is that when windows logs on and runs the file (batch file) it asks the user if it wants to modify the registry. What can I ad to the batch file so that it runs the xxx.reg file without any questions.
Thanks

this is the line of the batch file:

CALL proxy.reg