Missing drivers for Acer 9300 laptop

I recently bought an Acer 9300 Aspire laptop that came pre-installed
with Vista Home Basic. I had the store install 2 gigs of memory and I
also bought a copy of Premium at the same time. A few days later I did
a complete format and clean install of Premium. I've had no real
problems to speak of, with one exception: there are two items in the
Device Manager that have no drivers and Vista can't find anything
online. It lists a coprocessor and a Mass Storage Controller. I've
managed to get the name of "MCP51 PMU" for the coprocessor and
"PCIxx12 Integrated FlashMedia Controller" for the Storage device.

Anyone know where I can get the drivers for these, or if I can correct
the problem some way?

Thanks for any help or insights...