I lurked for a few months during the 2004 season before jumping in, but then I just never left. I remember my first post being after the Rose Bowl game in Jan 2005 when people on these boards were giving Texas props for the close win, when everyone I knew in real life was snickering saying we "got lucky" in that game (I worked with a lot of Aggies, of course). Not sure if that makes me still a "new" poster or if I have achieved senior-ranking yet but I definitely wasn't on the boards back in the 90's, as I didn't even know back then that I would be a longhorn.
I wasn't raised a longhorn fan, but when I was chosen to be among their student population, the football spirit washed over me and hasn't ever left. I had never attended a school with a decent-to-good football team before, so it was a fun time to be a "new" fan back in those years.