accessibility question: adding aural pauses to speaking browsers?

Does anyone know the proper markup to use, or a trick to insert a pause in a speaking browser? I am using IBM Home Page Reader... I have text where I would like to add an aural pause, but that doesn't add any visual breaks.

For example, on screen you might read:
One Two Three Four Five

I would like the speaking browser to say:
"One Two." "Three Four." "Five."

Thanks!
eklemen(at)venturipartners(dotcom)

:: have text where I would like to add an aural pause, but that doesn't
:: add any visual breaks.

Do note that very few of the screen readers actually use aurual css. Most
just read the screen as-is.

-Darrel