To get nice math typesetting, install MiKTeX Portable from MikTeX.

Then call

regsvr32 "C:\Program Files\MiKTeX\miktex\bin\MiKTeX209-core.dll"

(with the correct path).

Call

"C:\Program Files\MiKTeX\miktex\bin\htlatex"

(with the correct path) in order to make it install itself.