You're welcome!

In the XL Mod you can actually play as the Grand Duke of Lithuania.

After you run through that mod for a while, there are a few other really good ones out there. I'm playing the "Fall of Rome" mod at the moment, and I'm having a blast with it. "Hellenic Total War" was great fun, and I particularly liked the historical battles. The latest version of the BKB Super Mod should also be coming out soon. I haven't played it yet because I've been waiting for the newest version, but it also has a new map and additional factions. A lot of people swear by the MedMod, which may or may not have a new version coming out sometime in the future.

They all have threads in the "Engineers Guild" here.

Lots of good, high-quality mods. Enjoy!