Adjusting security policy to give full trust to intranet code

Hi,

We want to give full trust to the .NET code coming from our intranet
zone. I have tried to modify machine configuartion file using .NET
Framework configuartion tool. I have adjusted zone security to give
"Full Trust" to the code on intranet zone but it doesn't seem to help.
My program still throws security exception if run from n/w. Does the
tool really works? If yes, how to do what I want to acheive? Or do I
have to do machine reboot for new polciy to take effect?

Thanks in advance,
Vinay Chaudhari.

PS. We are using Framework 1.1.