Question on Trading with 2 or more EA's in FX?

i'm about to begin forex trading and will like to know these two questions (using MetaTrader 4 platform):

- can two or more different Expert Agents (virtual traders) trade on one account on one trade station?

on the other hand

- how about having one account and doing multiple trading with it on a number of different trade stations (PC's)?

2 EA's can be trading at the same time, just make sure each one has their own magic number so EA 1 is not going to close EA 2's trades.

thanks artov,
but how about the second question, any answer please