Flags in city screen, captured city graphics

[AnthonyIII]

Hello,

in civ4, at the bottom right, there's a flag symbolizing your civ. Is it any way to mod civ3 so that one could have a similar symbol or flag in the ingame-screen? Or in the city screen...?

Also, is there a way to let the city graphics of the cities you capture, stay the same and not change to the graphics of your original cities?

Thanks,

Anthony.