No worries about all the questions, we're glad to help where we can
I have attached a little screenie of how to enter the information for a trusted subnet zone.
The IP address is the IP address of your network... so if your computers IP address is say 192.168.1.4, the
subnet address is 192.168.1.0.
So simply take a look at your PCs address and replace the last part with a zero and you have the network address.
The subnet mask is the default 255.255.255.0.
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