See the eCommerce tutorial series for details:
this series will walk through how to create a product catalog, add eCart add to cart functionality and the checkout process.
for the first store that is an email order, use the eCart checkout wizard and select the mo gateway option, and check the option to send an email with the order info.
for the second store, select the gateway you wish to use for order processing.
eCart does not have an option for Rand, you can change the currency code in the eCart object, but you will also need to edit the code that processes the transaction through the gateway on the confirm page to change the currency code used there