TeX-style input in Word 2007

I’m stuck using MS Word for some collaborative tasks. I recently learned that the 2007 version allows limited TeX-format input in the equation editor. (OpenOffice has had this feature for a while, but I find its equation editor clunky too.) This makes it much faster to type inline equations. While editing text, [Alt]+ inserts an equation. Then, type some simple TeX. For example, typing this

Here's an inline example: {[Alt]+} R_1=R_0 e^(R_0 tau )

results in a semi-competently formatted equation.
Alas, still not as pretty as rendering it from the Tex and pasting a graphic in to the Word document. ┬áSome extra strikes of the spacebar are required to force the right combinations (which we’d normally do with {}). Here’s an article on this from 2006. I’m a late adopter.