Thanks for that info. I integrated my forum with a pre-existing asp.net membership provider via web.config edits, then ran Sync All Membership Users which worked fine to pull in the pre-existing members. So, given that, am I right that you're saying I will need to edit the code to get the Display Name from YAF's User table to show instead of the membership username? (ie: this is not a configurable YAF setting in my case?)
Thanks in advance for the clarification!