AS far as the VNC portion of your question, you need to create a connection in VNSea to the IP address that you want to connect to. The PC you are trying to remote into needs to have either Tight VNC or Ultra VNC running on it.
If you have a firewall or even a router, you will need to enable ports 5800 and 5900.
Because I use a router, I had to "clone" my cable modems IP address to my PC. This allows direct access more or less because I know no other way of setting it up.