There appears to be only one company that services our area:
TinyTots in Cupertino. They go all over the peninsula, so Mountain View is not too much out of the way. It's very easy to set up, and works well.
Prices appear reasonable, about $20/week for an infant (12/2007 prices), for 80 diapers. Just think of the mountain of garbage you'll avoid by using cotton over the first two years!
Their diaper info is available online, http://tinytots.com/ds/