Sparkystav

In the early days of G4X we did have a conversion tool, but there has been so many new features and strategy changes since it is no longer useful.  It is best to open up both PC Links side by side and start at the top of the settings tree then work your way down a folder at a time.  As KOracing suggests the import/export to clipboard function is useful.  The only tables that dont transfer well is some of the custom cal tables, these need the axis set up to match before importing.   

Get a MCP601 in DIP format - it will have a part number MCP601-I/P or -E/P.  Probably RS components will have them in small qty's.  You can solder it to a bit of strip board or just solder the wires direct to the pins.  
Pin 7 is the 5V supply (grab from TPS).
Pin 4 connect to sensor ground (again TPS).
Pin 3 is the TPS signal from the throttle body.
Short pin 2 & 6 together and connect a wire to the short, this is your buffered TPS signal output to the AT controller.