I am trying to "fix" a program for a friend of mine.  He has an applet that
starts a TWAIN scanner through a web interface.  Problem is, for some reason,
his software will only work if the .NET security for "my computer", "local
intranet" "internet" Trusted sites" and "untrusted sites" is set to full
trust.  Obviously the software is not written 100% properly, but the person
who he had program it is not around for some reason.  

Long story short, is there a way to have the install script that installs
this package (it is an applet we install locally, not one we call over the
web), change the trust levels automatically?  

I know VERY little about .NET (assume your Grandmother knows more about .NET
than I do), so if you can, please be gentle...