Thanks for the help, guys. I still haven't gotten it to work. Yeah, when I click one faction's crest, then another, the first faction's crest is no longer highlighted.

The problem I'm guessing is the multiplayer.cfg file. The instructions say to add the new lines of code to what is already in the multiplayer.cfg file, but does it make a difference where in the .cfg file I paste them? Does it go at the top? Do I erase the original [multiplayer] entry and replace it with the new one? Do I add it to what is already in [multiplayer] so it looks like this?

[multiplayer]
playable = 1
hotseat_turns = 0
hotseat_scroll = 0
hotseat_update_ai_camera = 1
hotseat_disable_papal_elections = 0
hotseat_autoresolve_battles = 0
hotseat_save_prefs = 1
hotseat_disable_console = 0
hotseat_validate_diplomacy = 1
hotseat_autoresolve_battles = 0
hotseat_disable_console = 1
hotseat_disable_papal_elections = 0
hotseat_save_prefs = 0
hotseat_update_ai_camera = 0
hotseat_validate_diplomacy = 1