Directions adapted from: http://www.stata.com/statalist/archive/2011-08/msg00693.html
1. Download version4 of rundo.au3, rundolines.au3 (released 14 August 2011) from http://www.huebler.info/2008/20080427-stata.html
2. Configure them in the same way the old rundo/rundolines are configured (Click here). Remember the global $dofile.
3. Change $statapath, $statawin. I also changed the *.ini's name to *12.ini so I can keep the older rundo/rundolines files.
4. Compile the .au3's into .exe's either by right-clicking and compiling or navigating to AutoIt in Start-Programs.
5. Open Textpad.
6. In Textpad, Configure - Preferences - Document class - Tools. Add rundo12, rundolines12 to your tools with the same parameters as their older analogs (see here).
7. In Textpad, Configure - New document class - and enter Stata12MP as a document class with the same parameters as your old Stata11 or Stata10 (see here).