How do you change the position of a Gui? [SOLVED]

This should be a quickie... I want to change the position of a Gui. I was wondering if it was CFrame.new() and how I would write it. Would I do something like script.Parent.Position = {0, 0} {0, 0}? Help would be appreciated! I realized it was UDim2.new(0, 0, 0, 0).