Typing TeX directly into Word
CaptainBlack is right. MathType 6 integrates with Word on both Windows and Macintosh platforms, allowing you to type TeX or LaTeX into the equation editing window and insert a typeset equation into your Word document. We'll soon begin beta testing on MathType 6.5 for Windows, which will make this process even easier. Version 6.5 will include a "TeX toggle", which will let you type TeX or LaTeX directly into Word. When you're ready to convert the TeX into typeset equations, click the icon on the toolbar or Ribbon, and the TeX will be converted into MathType equations. Clicking the icon again will convert it back into TeX (hence the term "toggle"). You can edit the equation either by double-clicking it, which will open it in MathType, or by toggling it back to TeX, editing the code, then clicking the icon again.
Originally Posted by Greengoblin
To apply to be a beta tester for MathType 6.5 for Windows, send an email to firstname.lastname@example.org. Let us know how you use TeX now, and in what context you'll be evaluating this feature. Note that this is not a public beta, and applying for inclusion in the program is no guarantee you'll be selected.