whaaaaa? windows 8 on the a100 or being able to use mtp/mass storage with windows 8? if its the first i want to say HA good luck with that be easier to compile ubuntu 12 arm compared to any windows os. If its the second well i have no clue.
Personally if i was gonna put windows 8 on a acer tablet i'd done it with the w500 which runs windows7 natively an has a keyboard dock (that will never mount right to a a100/a500 because its a normal usb port on the bottom of the w500 >.>)
-[Nexus 4 cm10.1 nightlies
-[SE X10miniPro MiniCM7.2 naa
-[Samsung Sidekick 4g RubiX Xcel v1.006
-[Note 8] CivZ-FLEX-BEAM 4.2.2