Use the edit button next time.

ok, so like, what u people are tellin me, lets say i train a unit of Hastati in Segesta( i have unit size at large) will it add 80 poeple to Segesta?????
If you train a unit of 80 troops, the population will decrease by 80. This shows the men needed in the unit.

how do i unlock the othere countries after the one i got after the romans.
If you want to unlock the either factions, you can either:
1) Beat the game on short or long campaign as one of the Roman factions.
2) Unlock the other factions. There should be a guide around here to figure that out.

2. how do i like egt my troops on the bottem no commandes and the map in the top right corner???
Go to preferences folder, and open the preferences.txt
Code:
MINIMAL_UI:FALSE
Find that line, and change it to this:
Code:
MINIMAL_UI:TRUE

Good luck and cheers,
RM3