Fix DWG Coordinate Alignment

My DWG came to me in the wrong scales / units, so every time I use AutoCAD’s ID command the numbers make no sense. I need the whole file—every layer, every object—re-aligned to the proper Geographic Coordinate System... (Budget: £10 - £20 GBP, Jobs: 3D Design, 3D Drafting, 3D Rendering, AutoCAD, Building Architecture, CAD / SolidWorks, CAD/CAM, Lisp)