Please excuse my ignorance and total dimness, but can you only play Mundas Magna with patch 1.2 or will insatlling BArbarian Invasion expansion pack do ?

Only asking becase I have dial up and that 1.2 patch would take about 3 years, well 3 hours to download !

Then I just add it to the the data file in Rome or Barbarian ? or what ? like I said I am not that clever with tech discriptions ! sorry