Nanny agencies?

Hi guys,
Wife is pregnant and I am trying to plan ahead (as you do). As I work mostly out of the country (away at least 7 months out of any year), I’d like to get her some domestic help/nanny to help her out. Figure I’ll start looking seriously after about the 6th/7th month of pregnancy, to be able to ‘‘test’’ the nanny before the baby is born.
Looking for agencies (preferably in Hsinchu) who could provide live-in (or live out/full time) domestic help/nannies. Would be a high preference for them to be bi-lingual and not better looking than the wife.

Also any ballpark figures on what this would cost would be appreciated… I’d rather not get ripped off… :ponder:

Are any of you guys Taiwanese? Or both foreigners? Yes, it matters.

The wife is Taiwanese and speaks great English. I’m foreign and speak laughably bad Mandarin.