When I'm browsing internet using IE7 in Vista Ultimate x64 SP1, "Local intranet" is displayed at the bottom right of the browser window.

Is this putting my pc in a low security state? how can I change the settings?

I'm using a an ADSL router and I have one more pc in my home. two PCs are connected to eacother via the same router and can share files in the "public" folders.

what is the best security settings I should set on my vista pc?

(still I want to share files with the other PC while being able to browse the web)

Thanks in advance!