Now you can have it on Windows 7.........
MicrosoftTinkerSmall.jpg 49.53K 21 downloads
Put the 'Tinker' folder that comes in the file below file into C:\Program Files\Microsoft games
Then, change the compatibility mode for 'Tinker.exe' to Windows Vista and check the 'Run as Administrator' box.
If you get the DX9 error requesting missing d3dx9_39.dll file, then copy this file (included in Tinker directory) to \Windows\System32 directory.