To play this 'mod' its simple, and I won't bore you by asking you to download a mod, as it is rather simple.
Open ...\Firaxis Games\Sid Meier's Civilization 4\Beyond The Sword\Assets\XML. On my computer, the ... is C:\Program Files, but it may differ depending on where you install.
Be careful, there is a very simaler folder (...\Beyond the Sword\assets (again, the ... may differ, for me it is C:\Users\Digit\Documents\My Games) with a small a. This is NOT the folder you want. Go find the other one.
Drag GlobalDefines.xml onto your desktop
Right click it, and select "Open with...", and select Notepad (or simaler)
Push Ctrl-F (or click Find)
Type in:
<CITY_MAX_NUM_BUILDINGS>1</CITY_MAX_NUM_BUILDINGS> (or a small section of that)
Replace the number 1 with the number 2 (or for more buildings (warning: Will be more buggy than this game... even 2 granaries give unexpected growth chances...) Save the file.
Close the file.
Drag the file from the desktop to the XML folder it came from
Voila! Your first XML change... and it wasn't too hard, and it was faster than downloading it too
Anyway...
Peace
860 - 1250
This is one of the more boring parts... in order to save my weak economy, I decided against building military units... I am saving that for janissaries... and LOTS of them ^.^ I am going down the guilds path to gunpowder, as that will allow me to pay for the troops with grocers (as per usual... I rarely use the other route... as universities are something I build REALLY late game.) and build tons of markets and courthouses.

910: Wow... thats something you don't normally see in a section entitled peace...
2 generals from the other continent. In the same turn. By the looks of it, over the last nearly-5-millenia, the other 4 civs have been building up HUGE forces in an insane arms race, and now they have been unleashed on each other. I hope that 1 civ doesn't vassalise the rest of the civs...

990: Construct the Kong Meao. 5 extra GPT... wow -.- That is TOTALLY anti-climatic. That said, with +50% from markets, +50% from grocers, +100% from banks, and +100% from wall street... that is ... umm... 15 GPT already, not including the spread of confusism!!

1000: Make this deal. Its hardly adequate, but I couldn't do any better. Fuedalism gives me a much needed 15 GPT, and Org Religion accelerates my build times, so its all good...

1030: Find copper. Goody!! My Globe theatre city REALLY needs the production (otherwise it would get only 5 hammers >.<)
In addition, ANOTHER GG on the other continent. That war is getting VICIOUS.

1060: Apparently I have the best science in the world... thats a good sign. And this prolonged peace (in which I build MUCH more infrastructure) will also help me out ALOT.

1130: I will whip the Collosus. As I will be aiming for astronomy AFTER steel (the AI did astronomy AFTER steam power before >.< Iron clads and galleys, who would have thought?), the Collosus will have a very VERY long life. That, and in that city, all the tiles are 3/1/3 or 3/1/2!!

1140: I am lucky... I would have aimed for the GL and failed if I had tried it... so at least this way, I didn't miss out on a wonder!

1150: Trade sheep for gems. Although it isn't a GREAT trade... its better than nothing, and I really need the healthiness, even if I can't increase it.

1180: A major decade in the life on the Turkish Island... firstly, construction begins on the globe theatre. Whip cost is 23, which is a LITTLE high. However, eventually, that city will be UNBEATABLE. MWAHAHAHAHAHA. Its just gonna take (alot of) time.

That smarmy Indian leader doesn't know that I am the best thing to happen with him. Yet ANOTHER uneven trade (slightly), but beurocracy is an INSANE civic in the case where my capital is both the highest production AND the highest gold producer in the country!! I adopt buerocracy the next turn.

1210: A snap shot of the capital. It is HUGE. 5.7 MILLION people (and in a game where the average biggest city in the modern era is something like 7.5 million, that is like having a city with 10 million people. In the medieval era!)

1250: Research something which will FINALLY tell us who is currently fighting over on the 'other' land, and whether we will be able to launch our army of rifles and cannons against them (apparently, cannons require rifling, which means our Janissaries are next to useless... when put up against +100% defence bonuses which are undefeatable...)

1250: And Konya, our Globe Theatre invin-city. Construction on the Globe Theatre is accelerated by chopping down the forests, but the next bit of construction will be done MOSTLY by an army of at least 4 engineers. Which will be all good

4 engineers + copper + 2 forges = 19

... which doesn't sound like much, until we WHIP IT.