It's almost ten years old, so it's a long history and I can go on about it for a long time, but when it started we all came from the official Nintendo forums called NSider (which has since shut down due to NOA restructuring). They had an Animal Crossing board called The Crossing Guardian and I had a popular thread called The Animal Crossing Ask Center (ACAC). We all came from there. Probably the only people that the current active members have heard of are Mino and Justin, although they weren't made staff until many years later. But Bulerias and Smarth_Tech_Dragon_15 (mostly Bulerias) were the two primary people who helped me start the forum and were also our second and third admins. And this leads us to early 2005, not even close to the TBT you're all looking at, so yeah... there's a lot.
Before ZetaBoards, we were on InvisionFree (IPB 1.3), as all ZetaBoards forums originally were. We had a lot of different themes though. That is only one of them, which had three different season. Most of them had four, actually. One of our themes also had time-changing banners, which was a pretty big deal back then. ?ish, the moderator, designed a lot of them as well and he was very creative with the,. Some day it would be nice to recreate them for vB, but I think we may have lost most of them.
That was just used to convert the posts to vB.