Convert MathType equations to native Word 2007/2010 equations
I have found that GrindEq offers a MathType-to-Word-Equation converter, it seems to do a proper job. Shareware.
MathType has a toggle TeX feature that's convenient for converting a single equation or small selection of equations either from MathType to LaTeX or vice versa. There's also the Convert Equations command on the MathType Ribbon in Word that gives you more conversion options.