How do you properly setup Tor on a Windows 7 box to guarantee that ALL connections will run through Tor?
You should be able to to that with the Windows Firewall "with advanced functionality" (something like that), as this firewall knows about local processes: you can make per-program rules (a "program" here is actually just a file name, as for example
So you should be able to:
You cannot guarantee that all connections will route through Tor, no matter what operating system you are using. Tor cannot route UDP traffic and is only able to route TCP traffic.
For your TCP traffic you can simply follow the Documentation on the Tor Project Website