In order to be able to post in the OFM forums you need to register first.

My account is created, but I cannot post

Your account is still not fully activated. After creating your account, a verification-mail will be sent to your e-mail address. In which you will find a link to activate your account. After the activation you will be able to post in the forums.

Thank you for registering, user. An email has been dispatched to xxx@your-mail.com with details on how to activate your account. Click here to return to where you were previously.

You will receive an email in your in-box. You must follow the link given in the email before you can post on these forums.
I have not received an e-mail to activate my account

It can happen that at free email services (yahoo.com; hotmail.com etc.) the verification e-mail could be in your spam-folder. Therefore, please check the according folder in your in-box.
In case you haven’t received any e-mail at all, please send a private message to one of the forum administrators. One of them will activate your account.