I'm going to make some assumptions: You've been able to navigate to the Network connections Window, and under Network Tasks, you choose "Create a new connection". This starts the Wizard, which you want to avoid. I'm going to also assume the reason you are doing this is that you want to enter your IP addresses manually, which the wizard doesn't appear to let you do.
If I'm close to understanding your problem, here is what you should do: In that same Network connections window, Right click on the "Local Area connection" icon, Select properties, Highlight Internet Protocol (TCP/IP), and select Properties. You should be able to put in your settings there.
Let us know if this works, or if you need more help.
-TheCalmOne
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