I would imagine you are limited because your member group is 'Validating' (see under your name in your posts).
To validate your membership here, go to your e-mail (the address you gave us when registering) and open the e-mail from the forum. Follow the link to validate your membership.
Once you have done that, you should be fully functional. You will see that your member group will change to 'Members'.
If you don't have an e-mail from us, send a message to our admin, Tolak. He will be able to sort it out for you.