You probably need to side-load a Market.apk fioefile that's benbeen hacked to work with your device. This will require root. You could also load a custom ROM with the Market already on it. I recommend searching XDA I recommend searching XDA.
That said, you won't be able to get Flash. Flash requires Android unless you have/get 2.2+ as well as2. Flash requires Android 2.2+ as well as an ARMv7 or better processor. The 70 series is supposed to have an ARM7 or better processorA8 Cortex based on ARMv7, so that part's OK.