Nice mod .. But i want "display name" showing all is: register, login, who's online, profile ..v..v.. so, i want this mod show replace all username .... i waiting version 2.0 :)

shadowevil install

You might want to consider changing the replacements to:
Otherwise people who haven't set a "Preferred Name" won't have a Username. :p

I wish vbulletin had the one implemented like on IPB boards default

LMAO Good thinking

Okay.. I did this and then decided agaisnt it. Took all my templates back and now everyones posts is showing up in their username, even if its posted by someone else, it shows their username in the threads. Any help?

Okay.. now all my posts aren't showing up and it's just all messed up. Gosh.. what did I do? :(

Sorry Pink .. Can't really understand what your problem is ... everything should be fine if you reverted your templates back to their defaults.

How can I add this to the main page for the Last Post By .

Yeah, I was just going to post that you may want to make it conditional:

Also, by doing this, you're stripping the name of all of its markup. It may not be the best idea.

Edit: You can retain the usergroup's html markup if you edit it the functions.php file, but is there any other way to do it without file edits?

I don't see any way to do it without code modification. The board isn't developed to handle the thought of a user having a different editable bit that is displayed aside from login. It would be nice.

I'll look at hacking the function code.