Installing Microsoft CRM 3.0 Error Groups Does not exist

Hello
I have made a fresh install of CRM 3.0. I am getting the following error while checking the list of requirements before setup will continue:
One more Microsoft CRM groups do not exist
I made this installation that setup the group automatically. And I have made a wrong. Then I have read the CRM requires doc’s for 4 groups. (PriUserGroup, SQLAccessGroup, UserGroup, ReportingGroup).
After opened the Active Directory I add those 4 groups manually to the local domain but I got the same message after trying to re-install.
I think I have to move the group in a specified directory on the control of my domain. (ie: in "MyBusiness" or "MyBusiness/SecurityGroups" etc). But I have no idea where or if this is right.
So help needed. Thanks
