Judging by your registration date, I assume the previous registrations were unable to be recovered?
Not that it's a really big deal, but I hate it when the O'l Timers blow you off because you have new Reg date.
When we did our upgrade from a Cold Fusion based board to php, we were able to transfer 100% of our data so the user info was not lost at all. 206k worth of threads!!
Looks like you went with IBB correct?