Exchange public folder permissions issue

I am running Exchange 2007 with Outlook 2010. I created a public folder by logging into Outlook as administrator and then setting the permissions. I accidentally removed the admin permission but still managed to give the correct users their permissions. So now the public folder is visible to the users but invisible to me as administrator. All users were set as editor so nobody else has higher permission.

How do I correct the permission so that admin is the owner again so I can continue to modify the permissions in the future since more users will eventually need to be added?

Thanks,

Justin