Is there an OpenID php forum that can integrate with my existing profile system?

Recently, I have been building a website and I really want to have a forum integrated with it. I have already implemented an OpenID login for my system and I would really like that to开发者_开发知识库 carry over to the forum.

I've been looking around at many open-source/free php forums, but I cannot find one that has OpenID integration. Has anyone implemented this or seen any implementations? Am I using the wrong terms when I do my searches for forum software? I really want to avoid my users having to make 2 logins/2 profiles/2 etc. for my site and I personally think it would be a lot cleaner to have a universal login using OpenID.

I know coding my own forum would be reinventing the wheel, but I really want a single login and profile solution!

Edit:

Is it naive of me to think that a php forum would be able to use my already existing profile system in place of theirs? Obviously the forum is expecting certain user information to be stored, but would it be better for me to convert my profile system into a forum's system instead of vice versa?

SMF does have it in 2.0 (or a working plugin anyway)

phpBB has OpenID support using this plugin: http://sourceforge.net/projects/phpbb-openid/

I agree with Mchl, SMF has OpenID built in. I have not gotten OpenID to work on my forum with any other software.